Which sentence is punctuated correctly?

A.
Michelle Obama is the wife of the 44th president, she is the first African American first lady.

B.
Michelle Obama is the wife of the 44th president she is the first African American first lady.

C.
Michelle Obama is the wife of the 44th president; she is the first African American first lady.

Check Answer

C. Michelle Obama is the wife of the 44th president; she is the first African American first lady.