Which one of the following is not one of the reinforcement schedules used to encourage desired behaviors?

The primary advantage of a letter of credit is that it reduces risk

Indicate whether the statement is true or false.

Molly and Craig are the original parties to a contract. Craig is obligated to design a Website for Molly. They subsequently make an agreement with Eric that Eric should take the place of Craig and assume all of Craig's rights and duties under the contract. The agreement releases Craig from his obligations under the contract. This agreement is:

a. a novation. b. an accord and satisfaction. c. an assignment. d. a nullification.