Hello! I am having a hard time with this question. The answer is C and I couldn’t figure it out. I’d appreciate any help solving this question. Thank you in advance.

A combination lock has three dials, each dial has eight letters. It is known that the following combinations have been used - one, who, two, bob, add, owl, fab, den, mia and tat.

Which one of the following words is not possible to use on this combination lock?

A win

B deb

C hat

D men

E bad