what t values form the boundaries of the critical region for a two-tailed test using a sample size of scores and an alpha level of 0.05?

what t values form the boundaries of the critical region for a two-tailed test using a sample size of scores and an alpha level of 0.05?

a) t=+/- 1.8690

b) t=+/- 1.833 (this is definitely not the answer)

c) t=+/- 2.306

d) t=+/- 2.262