Manager E has just learned that emotional intelligence is a great predictor of workplace ...

Manager E has just learned that emotional intelligence is a great predictor of workplace performance.  Which of the following would be the best choice for Manager E to measure the emotional intelligence of subordinates?
A) Ask their manager if they have high or low emotional intelligence
B) Ask the person to role play how they would respond in different customer interactions and measure their responses
C) Ask the person to rate their own level of emotional intelligence
D) Use their score on emotional labor because the two concepts are so closely related