Use the Following Consider Taking Random Samples of Size 100 from Population a from Population

Multiple Choice

Use the following
Consider taking random samples of size 100 from Population A with mean 85 and standard deviation of 15 and random samples of size 60 from Population B with mean 78 and standard deviation 12.
-How many degrees of freedom should be used when conducting inference for with samples of this size?

A) 99
B) 100
C) 59
D) 60