Select the correctly punctuated sentence.

A) Dr. Christiaan Barnard, who performed the first heart transplant, is a well-known cardiologist.
B) Dr. Christiaan Barnard, who performed the first heart transplant. Is a well-known cardiologist.
C) Dr. Christiaan Barnard, who performed the first heart transplant is a well-known cardiologist.

my answer was A

Right.