Use the Given Information to Find the Minimum Sample Size $\mu$

Multiple Choice

Use the given information to find the minimum sample size required to estimate an unknown population mean $\mu$
-How many business students must be randomly selected to estimate the mean monthly earnings of business students at one college? We want 95% confidence that the sample mean is within $135 of the population mean,
And the population standard deviation is known to be $538.

A) 86
B) 62
C) 43
D) 54