A is the answer to this question. This American vocalist and songwriter gained his fame as the lead vocalist of Steely Dan. He left the group but he did create a lot of songs that made the group more popular. Take note that he was the vocalist for only a short period of time from the latter part of 1972 to the early part of 1973.
He is not very active in the music industry anymore but back in 2004, he sued his former band because of royalties. He has written a lot of songs and he also created some songs for other singers that became hits. An example of this is the song Jazzman sang by Carole King.