Find the sum.

(6x2y + 4xy2 − 2y3 + 6) + (x2y + 3y3 − 5)


7x2y + 4xy2 + y3 + 1
7x2y + 4xy2 + y3 − 11
6x2y + 4xy2 + y3 + 1
6x2y + 4xy2 + 5y3 + 1
these are my options