Find out the sample mean of observations

Question

Determine the P-value. 

Assume we wish to test the hypotheses H₀: μ = 10 versus H_a:  μ < 10, where μ represents the mean age of non-high school aged children who are members of a large gymnastics club in a metropolitan area. Assume age follows a normal distribution with σ = 2.  A random sample of 16 ages is drawn from the population, and we find out the sample mean of these observations to be μ = 8.76

What is the value of the P-value?

A) 0                                                C) 0.1075

B) 0.0066                                        D) 0.2676