1.If R = {(x, y) : x, y ∈ Z, x² + y² ≤ 4} is a relation in Z, then domain of R isa.{0, 1, 2}b.{0, −1, −2}c.{−2, −1, 0, 1, 2}d.None of theseLogin to continueOnly logged in users canattempt or see the solution.