Hank went to an apple orchard and paid an entrance fee of $5 and bought a pounds of apples at $2 per pound. Hank paid a total of $19.

Which equation shows an equality between two different ways of expressing how much Hank paid in all?
A. 5a + 2 = 19
B. 5 + 2a = 19
C. 5a – 2 = 19
D. 5 – 2a = 19