Sentence Are you a handy person with the knowledge to do it yourself but you do not have the tools or equipment?

— ExhibitC

Sentence Are you a handy person with the knowledge to do it yourself but you do not have the tools or equipment?

Which correction should be made to sentence 3?
A . insert a comma after person
B . insert a comma after yourself
C . insert a comma after but
D . change do to does
E . change have to has

Answer: B