About Type-I error, which one is wrong?
A.
The probability of making a Type-I error is denoted by α(alpha).
B.
A Type-I error is committed when H1 is accepted while Ho is true.
C.
A Type-I error is committed when Ho is accepted while Ho is false.
D.
The probability of making a Type-I error is known, which is exactly the significance level α,often 0.05