The President of a Consulting Firm Wants to Minimize the Total

Multiple Choice

The president of a consulting firm wants to minimize the total number of hours it will take to complete four projects for a new client. Accordingly, she has estimated the time it should take for each of her top consultants-Charlie, Betty, Johnny, and Rick-to complete any of the four projects, as follows:
Assume there must be one-to-one matching between consultants and projects. What is the optimal assignment of consultants to projects?

A) Charlie to A; Betty to B; Johnny to C; Rick to D
B) Charlie to D; Betty to C; Johnny to B; Rick to A
C) Charlie to C; Betty to A; Johnny to D; Rick to B
D) Charlie to D; Betty to B; Johnny to C; Rick to A
E) Charlie to D; Betty to A; Johnny to C; Rick to B