Kellie Owes a Duty to Grant and Kellie Delegates the Duty

Multiple Choice

Kellie owes a duty to Grant and Kellie delegates the duty to Hank. Hank:

A) is not obligated to either Kellie or Grant to perform the duty unless Hank agrees to do so.
B) becomes liable for nonperformance to both Kellie and Grant only if Hank promises both Kellie and Grant that he will perform Kellie's duty.
C) cannot create contractual rights in Grant.
D) All of these.