Select the letter cluster that will replace the question mark (?) in the following series
BVU, ZXQ, XZM, VBI, TDE, ?

BVU, ZXQ, XZM, VBI, TDE, ?

Logic:
1st letter → -2 each time
2nd letter → +2 each time
3rd letter → -4 each time

Solution:
1st letter – B - 2 = Z - 2 = X - 2 = V - 2 = T - 2 = R
2nd letter – V + 2 = X + 2 = Z + 2 = B + 2 = D + 2 = F
3rd letter – U - 4 = Q - 4 = M - 4 = I - 4 = E - 4 = A