(1.9 * 0.021) / (0.095 * 0.105) = ______?

A. 1/20
B. 1/5
C. 4
D. 10
Explanation:
(1.9 * 0.021) / (0.095 * 0.105) = (19 * 21 * 100) / (95 * 105) = 4