Tổng \(T = C_n^0 + C_n^1 + C_n^2 + C_n^3 + ... + C_n^n\) bằng:

A. \(T = {2^n}\)

B. \(T = {2^n}+1\)

C. \(T = {2^n}-1\)

D. \(T = {4^n}\)