Four different sets of objects contain 2, 5, 6, and 7 objects, respectively. how many unique combinations can be formed by picking one object from each set?

The correct answer for the question that is being presented above is this one: "A.960."Four different sets of objects contain 2, 5, 6, and 7 objects, respectively. 

= 2 * 5 * 6 * 7
= 960

Here are the following choices:
A.960 
B.141 
C.23 
D.529

Idon’t know but hope this you

This does not make sense