August is selling tickets for his school play.

-Adults pay $7 a ticket while students pay $5 a ticket.
-August sells 35 tickets and collects $160.

How many of each type of tickets did he sell?

A. 40 students and 32 adults
B. 20 students and 15 adults
C. 4 students and 5 adults
D. 15 students and 20 adults