Arne and Ben each got a small raise last week.Arne feels insulted,because his boss clearly doesn't value him.Ben feels contented,because the economy is tight,and he feels that any raise is a good thing.According to Albert Ellis,what differs most dramatically between Arne and Ben

A)  their activating events
B)  their belief systems 
C)  their hardiness
D)  their personality types

According to Albert Ellis' rational emotive behavior therapy (REBT), people's emotional and behavioral responses are mainly determined by their belief systems (B) about the activating events (A) they encounter. In this scenario, the activating event is the small raise received by both Arne and Ben. However, Arne feels insulted, which suggests that his belief system is negative and irrational about the raise, whereas Ben feels contented, indicating that his belief system is positive and rational. Hardiness (C) and personality types (D) may also play a role in shaping people's responses, but they are not the main focus of REBT.