Which does not have a subject/verb error and is correct?

a. Not only the landlady but also her children wants Clara to move.

b. Neither the landlady nor her children wants Clara to move.

c. Not only the landlady but also her children want Clara to move.

b. Neither the landlady nor her children wants Clara to move.

The correct option that does not have a subject/verb error is:

c. Not only the landlady but also her children want Clara to move.