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. After the row and column reductions, what is the resulting entry in the new table for assigning Rick to project D?

A) 0 hours
B) 8 hours
C) 10 hours
D) 9 hours
E) 22 hours