Please help Select the correct answer

A group of crafters is collecting data on the amount of yarn they use for each scarf knitted. Each person collected 12 pieces of data and will
compile that data to determine a population mean. One crafter, Chris, has a sample mean of 200 meters of yarn.

Which statement must be
true about this situation?

A. The population mean is also 200.
B. The population mean must be less than 200.
C. There is not enough information to make a conclusion about the population mean.
D. The population mean must be greater than 200.