Lawrence Watkins (born October 5, 1946 in Bessemer, Alabama) is a former American football running back in the National Football League for the Detroit Lions, Philadelphia Eagles, Buffalo Bills, and the New York Giants. He played college football at Alcorn State University.

Can we draw the following conclusion?
Lawrence Watkins has retired from football.

Select from:
[a]. Yes.
[b]. It's impossible to say.
[c]. No.
[a].