On a recent shopping trip, you see a sale advertising 5 pairs of socks and 2 pairs of shoes for $100. Write an equation using x to represent the cost of socks and y to represent the cost of shoes.
Group of answer choices hurrrrrrry asp
A. 20x + 50y = 100
B. 5x + 2y = 100
C. 50x + 20y = 100
D. 2x + 5y = 100