1 . x3+6x2y+11xy2+6y3 

• A. $\left(x+y\right)\left(x+3y\right)\left(x+5y\right)$
• B. $\left(x+y\right)\left(x+2y\right)\left(x+3y\right)$
• C. $\left(x+y\right)\left(x+4y\right)\left(x+3y\right)$
• D. $\left(x-y\right)\left(x+y\right)\left(x+2y\right)$

Answer: Option B

Explanation: