A new study has concluded that athletes eating a gluten free diet had a higher V02 max (an indicator of cardiovascular fitness) than athletes that do not eat a gluten free diet (45 mL/kg/min vs. 40 mL/kg/min; p=0.02).

Suppose the truth is that there is no relationship between gluten free diets and cardiovascular fitness.What type of error occurred?

a.type 3 error

b.no error occured

c.type 2 error

d. type 1 error