Which sentence is punctuated correctly?
Which sentence is punctuated correctly? A. I scored a higher grade, on this test, than any other I've taken in my entire life B. I scored a higher grade, on this test, than any other Ive taken in my entire life. C. I scored a higher grade on this test than any other I've taken in my entire life. D. I scored a higher grade on this test than any other Ive taken in my entire life.