need explanation

4) In testing the claim about the mean annual income of full-time college students is below $15,000, a random sample of 40 students were selected. The sample mean is $14,450 and sample standard deviation is $2025. Based on an appropriate hypothesis test, what is the correct conclusion at 0.01 significance level? a. Sample provides sufficient evidence to support the claim that the mean income is below $15,000. O b. Sample does not provides sufficient evidence to support the claim that the mean income is below $15,000. O c. Sample provides sufficient evidence to conclude that that the mean income is at least $15,000. O d. cannot make a conclusion based on given information