Correct Option: A

Graham Smith was a Canadian swimmer, who won the silver medal in the 4x100m Medley Relay at the 1976 Summer Olympics in Montreal, Canada. At the 1978 Commonwealth Games in Edmonton, he became the first competitor to win six gold medals at a single Commonwealth Games; he won the 100m and 200m breaststroke, 200m and 400m individual medleys, and was part of the winning 4x100 freestyle and medley relay teams. Smith twice broke the world record in the men’s 200m individual medley (long course).