1.If C0,C1,C2,…,CnC_0, C_1, C_2, \ldots, C_nC0,C1,C2,…,Cn denote the binomial coefficients in the expansion of (1+x)n(1 + x)^n(1+x)n, then the value of C0+(C0+C1)+(C0+C1+C2)+…+(C0+C1+…+Cn−1)C_0 + (C_0 + C_1) + (C_0 + C_1 + C_2) + \ldots + (C_0 + C_1 + \ldots + C_{n-1})C0+(C0+C1)+(C0+C1+C2)+…+(C0+C1+…+Cn−1) isa.n⋅2n−1n \cdot 2^{n-1}n⋅2n−1b.n⋅2nn \cdot 2^nn⋅2nc.(n−1)⋅2n−1(n-1) \cdot 2^{n-1}(n−1)⋅2n−1d.(n−1)⋅2n(n-1) \cdot 2^n(n−1)⋅2nLogin to continueOnly logged in users canattempt or see the solution.