Suppose ( a₁ = 3aₙ - 2aₙ₋₁ ) and ( a₀ = 1, a₁ = 2 ). What is ( aₙ ) expressed as a function of ( n )?
a) ( 2n )
b) ( n² )
c) ( (-1)ⁿ )
d) ( 3ⁿ )