A grocery store receives a 180-pound crate containing six 10-pound bags of potatoes and an unknown number of 5-pound bags of potatoes. Choose an equation that represents the number of bags of potatoes in the crate.

A. 6(10) + 180 = 5x
B. 10 + 6 + 5x = 180
C. 180 = 5 + 60x
D. 6(10) + 5x = 180