How long did it probably take Tommy to answer the dog's questions?

Choices:
A. 10 seconds.
B. 15 minutes.
C. One minute.
D. not enough information
One minute.
"If you can answer three questions," the dog said, "you can wear the magic shoes."
Tommy looked up and down the deserted street. "Did you ... say something?"
"That's right. Didn't you hear me?" It was a gruff voice, with just a trace of an English accent, and it was definitely coming out of the dog.
"You're a dog." In fact it was a huge, fat bulldog, with big flaps of skin hanging off the sides of its face. From where it sat, on the front steps of the abandoned motel, it looked Tommy straight in the eye.
"That's correct," the dog said.
Tommy stared hard at the dusty windows of the motel office. "This is a trick, right? There's a TV camera back there and you want to make me look stupid."
"No tricks, Tommy. Just three questions."
"C'mon," Tommy said. He deepened his voice. "Sit up." The dog stared at him. "Roll over. Play dead."
"Cut the crap, Tommy. Do you want the shoes or not?"
"Let me see 'em."
The dog shifted its weight to one side, revealing a battered pair of red Converse All-Stars. "Yuck," Tommy said. "Those are gross."
"Maybe," the dog said, "but they're magic."
"What are the questions?"
"Which of the following presidents died in office? Lincoln, McKinley, F.D.R.?"
"C'mon. They all did. That's the same dumb question they use when they're trying to sell you a free portrait on the telephone."
"Which weighs more, a pound of feathers or a pound of lead?"
"They both weigh a pound. This is stupid. Next you're going to ask me who's buried in Grant's Tomb."
The dog narrowed its eyes. "Have you done this before?"
"Ulysses S. Grant," Tommy said. "Lemme see the shoes."
They were just his size and felt pretty good, even though they were scuffed up and the metal things were gone out of the side vents. "I don't feel any different," Tommy said.
"You need the shoes to look for the treasure," the dog said.
"What treasure?"
"When you're wearing the shoes, you can open the doors of the motel rooms."