The Population Parameter for Firefighters on Long Island Is 79

The population parameter for firefighters on Long Island is 79% male. The sample statistic for three fire stations is 73% male. Why wasn't the sample statistic the same as the population parameter?

A) Sampling error was present.
B) Random variation might have occurred.
C) Systematic variation might have occurred.
D) The sample was fairly small.
E) The sample was not perfectly representative.
F) The population parameter is inaccurate.