Select the most appropriate set of words from the given choices to fill in the blanks.

I am an entertainer, ___________ , I have to keep smiling because in my heart laughter and sorrow have an affinity.

A. even if I have tears in me

B. even though I am depressed inside

C. while entertaining people

D. in the entertainment business

Please do not use chat terms. Example: avoid using "grt" instead of "great".