Multiple Choice Question (MCQ)

Question: Which is the expansion of a3 + b3?
A. (a-b) (a<sup>2</sup> + b<sup>2</sup> - ab)
B. (a+b) (a<sup>2</sup> + b<sup>2</sup> - ab)
C. a<sup>3</sup> + b<sup>3</sup> + 3ab (a+b)
D. a<sup>3</sup> - b<sup>3</sup> + 3ab (a-b)
Correct Answer: (a+b) (a<sup>2</sup> + b<sup>2</sup> - ab)