Answer:
B
Step-by-step explanation:
7
I believe it's the 1st one.
HOPE IT HELPS! BE SAFE :3
2835x^5.
By Binomial Theorem, T(r+1) = nCr * a^(r+1) * b^r.
Term 5 = 7C4 * x^5 * 3^4
= 35 * x^5 * 3^4
= 2835x^5.