If (2 + x/3)⁵⁵ is expanded in the ascending powers of x and the coefficients of powers of x in two consecutive terms of the expansion are equal, then these terms are :

A. 7ᵗʰ and 8ᵗʰ
B. 8ᵗʰ and 9ᵗʰ
C. 28ᵗʰ and 29ᵗʰ
D. 27ᵗʰ and 28ᵗʰ