Which choice contains the correct punctuation? a) here is what my mother said to me, at least once: "jerry, you've got to try a little harder." b) here is what my mother said to me; at least once: "jerry, you've got to try a little harder." c) here is what my mother said to me, at least once; "jerry, you've got to try a little harder." d) here is what my mother said to me: at least once: "jerry, you've got to try a little harder."