HELP ME PLEASE ASAP

One Friday night, a group of friends bought 5 containers of popcorn and 4 granola bars at the movie theatre for $42.50. The next week, the same group of friends bought 3 containers of popcorn and 6 granola bars for $34.50. Let p represent the cost of one container of popcorn. Let g represent the cost of one granola bar. Which system of equations will solve for p and g?

A. 5p+4g=34.50
3p+6g=42.50

B. 4p+5g=34.50
3p+6g=42.50

C. 4p+5g=42.50
6p+3g=34.50

D. 5p+4g=42.50
3p+6g=34.50