Alexandra has 36 coins valued at $6.00. She has only nickels and quarters. Which equation can be used to solve for the number of nickels, n?
A. 0.05n + 0.25(36 – n) = 6
B. 0.05n + 0.25(36 – n) = 36
C. n + 0.05 = 0.05n
D. n + (36 – n) = 36
