Use Pascal's triangle to expand (x + 3)4. Question 6 options: A) x4 + 12x3 + 54x2 + 108x + 81 B) x4 – 12x3 + 54x2 – 108x + 81 C) x4 – 20x3 + 90x2 – 135x + 81 D) x4 + 20x3 + 90x2 + 135x + 81