David Had Put Extra Hours into the Project and Had

Multiple Choice

David had put extra hours into the project and had made sure that all glitches were taken care of. His manager acknowledged his effort and recommended him to be a part of the reconnaissance team visiting China. David was very happy and assured his manager that he'd put in extra effort in the future. Which of the following does this situation exemplify?

A) Law of effect
B) Under-reward inequity
C) Deficit principle
D) Progression principle
E) ERG theory