Jake sees a TV ad promising to help scrawny guys build huge muscles like the professional athlete on screen seen drinking the advertised shake. Prior to spending his hard earned money, Jake should: (2 points)

a
Investigate the ingredients of the product.

b
Calculate the total cost of using the product to get the desired results.

c
Consult a fitness expert and get another opinion of the potential effectiveness of the product.

d
All of the above fr