Use the Following to Answer the Questions Below

Multiple Choice

Use the following to answer the questions below:
Consider taking random samples of size 50 from Population A with mean 15 and standard deviation 3 and random samples of size 75 from Population B with mean 10 and standard deviation 5.
-Find the mean of the distribution of differences in sample means,

A) -5
B) 5
C) 10
D) 15