Rewrite the following recursive function using an appropriate fold function. myLength : [a] -> Int myLength [] = 0 myLength (:xs) = 1 + myLength xs myLength x = _a__ (accx-> __b__ + 1) 0x _a 9. Choose the appropriate word to fill blank (10 Points) foldl foldr map scanr 10. Choose the appropriate word to fill blank ___b__ (10 Points) O Vacc map O y