My question involves criminal law for the state of: Michigan

There was a party/get-together where people went to. I will use variables to label the people:

A = boy, only 21 year old, brought a fifth of vodka to the party
B = 15 year old girl, uninsured, no drivers license
C = 19 year old girl, uninsured, no drivers license
D = 19 year old girl who hosted the party/get-together
E = 20 year old boy

Ok, party at D's house. It gets early into the morning and people start going to sleep. B and C are both drunk (A drove C to the party and C appeared to already be drunk) off A's alcohol. A did bring the booze, but he brought it for his own personal use and left it on the table where B and C could have got a hold of it. B and C need to go home, A offered them a ride in a few hours after he takes a nap, but they get reckless. They begin to badger E into giving them his keys when he was pretty much passed out drunk and he gave no verbal 'Yes' or 'No'. B takes E's keys from his pocket and leave around 5am. Everyone else gets a call that C crashed the car into a mailbox and fire hydrant around 7:40am. E goes to the car crash, calls the cops, and everything seems to be settled with the cops afterward.

B and C both get an MIP, C also gets a DUI, and E's father is going to press charges on B and C for grand theft auto. C's mother is going to get a lawyer to defend against the charges. How is A going to fair off? Technically, he did supply the booze in which B and C consumed. But if his name is brought up in court, will/can he then be charged for this? There is no hard evidence (no booze bottles recovered by the police from D's house). Only words against words.

Thanks