Why does Pete volonteere at night?

Choices:
A. NIght shifts pays more money
B. He likes working with Ray
C. he has another job
D. not enough information
he has another job
"Hey, guy."
"No, this is Ray." He smiled, leaned back in his chair.
It was, of course, Pete. Pete was the night shift guy at Crossroads Detox across town. Ray called it the Jesus Shop because it was wholly supported by a contingent of local churches who saw addicts as a potential ministry.
Apparently Jesus saved--not only from sin and hell, but also from Dark Eyed Jim Beam.
Pete was a relatively innocuous born again fundie who volunteered his time two or three nights a week. When he was not saving the world, his Clark Kent was actually a steady CPA job with the local H&R Block. He'd been pulling shifts for about six months, knew nothing about drugs beyond that bad people used them to escape their problems and that they were tools of Satan, and he always needed Ray's advice about one thing or another. This arrangement was not problematic as Pete had long ago given up trying to convert him. Pete was also the only guy in the city who was, as Ray figured it, making less money than he was at such an hour. In return for Ray's magnanimity, Pete had done Ray's taxes for free last year.
They had never actually met, though Ray had faxed him the tax forms and Pete had faxed back a photo of his two pre-teen daughters and his geriatric Lab.
"What's the problem?" Ray asked.
"I have a recalcitrant."
That's what he called them, the drunk and definitely disorderly. Pete's vocabulary did not include the word shithead either in its singular or plural.
"Pete, they're all like that. Alcohol is bad medicine. That's why places like ours are in business. To make them calcitrant."
"I know that." Pete sounded a little annoyed.
There was some commotion in the background, a knocking on doors.