John Rejected His Null Hypothesis in a Right-Tailed Test for a Mean

Multiple Choice

John rejected his null hypothesis in a right-tailed test for a mean at α = .025 because his critical t value was 2.000 and his calculated t value was 2.345. We can be sure that:

A) John did not commit a Type I error.
B) John did not commit a Type II error.
C) John committed neither a Type I nor Type II error.
D) John committed both a Type I and a Type II error.