Can you help me?

How many tissues should package of tissues contain? Suppose a random sample of 10,000 people yielded the following data on the number of tissues used during a cold : x=61, s=25. We want to test the claim that u>=66. State the correct rejection region when a=0.01

a. Reject Ho if z= -20

b. reject Ho if z>2.576

c. reject Ho if z >2.326

d. reject Ho if z> 2.576 or z< -2.576

e. reject Ho if z < -2.326

f. reject Ho if z <-2.576