Which of the following is not one of the muscle types found in the body? a. skeletal b. hard c. cardiac d. smooth

Based on my information, the only 3 that would be the main of the muscle types found in the body would actually be Skeletal, smooth, and cardiac, but as for "hard", this would be known to be OUT of the body, as for therefore, this would NOT be  one of the muscle types found in the body.

A.Skeletal 
B.Hard 
C.Cardiac 
D.Smooth