Identify the steps used to find the solution for the recurrence relation aₙ = 2aₙ₋₁ - 3 with the initial condition a₀ = -1 using an iterative approach. (Check all that apply.)

a) Substitute the initial condition.
b) Solve for a₁.
c) Use the recursion formula to find a₂.
d) Repeat until n terms are obtained.