According to Alderfer's ERG Theory, What Behavior Might an Employee

According to Alderfer's ERG theory, what behavior might an employee exhibit relative to needs fulfillment?

A) If frustrated with needs fulfillment at one level, an employee will focus on a lower-level need.
B) An employee would focus on only one level of need fulfillment at any given time.
C) An employee will be most highly motivated by the level of need currently fulfilled.
D) If frustrated with needs fulfillment at one level, an employee will focus on a higher-level need.
E) All employees are focused on self-actualization as a primary need to fulfill.