The correct option is B 119
We have, 75600 = 24.33.52.7
The total number of ways of selecting some or all out of four 2's, three 3's, two 5's and one 7's is
(4 + 1)(3 + 1)(2 + 1)(1 + 1) - 1 = 119
Therefore, the required number of proper factors is 119.