Activities a and B Have a Finish to Finish Relationship

Multiple Choice

Activities A and B have a finish to finish relationship and early start and finish times as shown.What is the result of incorporating a 4-day lag between activities C and B?

A) The early finish for A increases to 31.
B) The early start time for A increases to 24.
C) The early finish time for B increases to 31.
D) The early start time for D falls to 23.