When People Are Thanked for Helping Someone,they Are ___

When people are thanked for helping someone,they are ___.

A) more likely to help that person again,but not others.
B) more likely to help that person or even someone else again.
C) less likely to help in the future because they have fulfilled their need to help.
D) more likely to help anyone but the person they have already helped.
E) less likely to help in the future because being thanked for their efforts was insufficiently rewarding.