Respuesta :

Your answer would be C...I hope!! 
tell me if this works.
EFH and GFH are not complementary, but supplimentary so A is incorrect.

EFH and GFH don't both equal 90 to get 180 so they can't equal each other, so B id incorrect.

C is correct.

EFH can;t be 45 but 145 so D is incorrect.

Hoped I helped!