which is the correct reason why (x+y)⁶ is not equal to X² y'²A. the expression x²+y² is the product of two factors (x+y)(x+y) and (x+y)² is the SUM if two terms B. the expression x²+y² is the product of two factors (x+y) (x+y) and (x+y)² is the PRODUCT of two terms C. The expression (x +y)²is the product of two factors (x +y) (x+y) and x² +y² is the SUM of two terms D. the expression (x+y)²is the product of two factors (x+y(x+y) and x² +y²​