Astore had 175 cell phones in the month of january. every month, 10% of the cell phones were sold and 10 new cell phones were stocked in the store.
which recursive function best represents the number of cell phones in the store f(n) after n months?
(a) f(n) = 175 - 0.9 * f(n - 1) + 10, f(0) = 175, n > 0
(b) f(n) = 0.1 * f(n - 1) + 10, f(0) = 175, n > 0
(c) f(n) = 175 + 0.9 * f(n - 1) + 10, f(0) = 175, n > 0
(d) f(n) = 0.9 * f(n - 1) + 10, f(0) = 175, n > 0