Given X∼Gamma(α,β)X \sim \text{Gamma}(\alpha, \beta)X∼Gamma(α,β), what is the mode for α>1\alpha > 1α>1?
(α−1)/β(\alpha-1)/\beta(α−1)/β
α/β\alpha/\betaα/β
β/α\beta/\alphaβ/α
α−1\alpha-1α−1