Evaluate this argument:
If my economist is an accurate forecaster, then she predicted the 2008 financial crisis.
She predicted the 2008 financial crisis.
So, my economist is an accurate forecaster.
a. The argument is a straw man.
b. The argument is sound: the logic is valid and the premises are true.
c. One or more premises are false, so the conclusion is false.
d. The argument is invalid: the conclusion does not necessarily follow from the premises.