In a certain code language, 'SURE' is coded as '20, 22, 19, 6'. 'THEM' is coded as '21, 9, 6, 1l'. What is the code for 'SELF' in that code language?

A

20, 6, 13, 7

B

20, 6, 12, 7

C

20, 5, 13, 7

D

19, 6, 13, 7