A selection is to be made for one post of Principal and two posts of Vice-Principal. Amongst the six candidates called for the interview, only two are eligible for the post of Principal while they all are eligible for the post of Vice-Principal. The number of possible combinations of selectees is
A
4
B
12
C
18
D
None of the above
Correct Answer: Option D
Explanation
Let's solve this step-by-step. We need to select one Principal and two Vice-Principals.
Step 1: Select the Principal.
The problem states that only t