If an=3an−1+2na_n = 3a_{n-1} + 2^nan=3an−1+2n, what is the form of the particular solution an(p)a_n^{(p)}an(p)?
A⋅2nA \cdot 2^nA⋅2n
A⋅n⋅2nA \cdot n \cdot 2^nA⋅n⋅2n
A⋅3nA \cdot 3^nA⋅3n
A⋅n⋅3nA \cdot n \cdot 3^nA⋅n⋅3n