1 . a+b3=?

• A. $a^3+b^3+3ab(a+b)$
• B. $a^3+3a^{2}b+3ab+b^3$
• C. $a^3+3ab+3a{b}^2+b^3$
• D. $a^3+b^3-3ab(a-b)$

Answer: Option A

Explanation: