In a Student's t-test, what is the meaning of the p-value?

In a Student’s t-test, what is the meaning of the p-value?

In a Student’s t-test, what is the meaning of the p-value?
A . it is the area under the appropriate tails of the Student’s distribution
B . it is the "power" of the Student’s t-test
C . it is the mean of the distribution for the null hypothesis
D . it is the mean of the distribution for the alternate hypothesis

Answer: A