Explain simply why Gilbert Gottfried is the correct answer to: Passage: Gilbert Gottfried (born February 28, 1955) is an American stand-up comedian, actor and voice actor. His numerous roles in film and television include voicing the parrot Iago in Disney's Aladdin, Digit in the children's cartoon / educational math-based show Cyberchase and Kraang Subprime in Teenage Mutant Ninja Turtles. Gottfried was also the voice of the Aflac Duck until 2011.

Question: Based on this passage, who does the voice for the aflac duck?. Explanation:
To answer the above question, the relevant sentence is: Gottfried was also the voice of the Aflac Duck until 2011.