If A={1,4,8,9} and B={1, 2, -1, -2, -3, 3,5} and R is a relation from set A to set B {(x, y): x=y2}. Find domain of the relation.

• A. {1,4,9}
• B. {-1,1, -2,2, -3,3}
• C. {1,4,8,9}
• D. {-1,1, -2,2, -3,3,5}