This is from ETS paper test:
Departments A, B and C have 10 employees each, and department D has 20 employees. Departments A, B, C, and D have no employees in common. A task force is to be formed by selecting 1 employee from each of departments A, B and C and 2 employees from department D. How many different task forces are possible?
10c1 * 10c1 * 10c1 * 20c2 = 190000
so I would say is D