8. Determine which, if any, of the three statements are equivalent. Give a reason for your conclusion. Show complete work.

Question

I.) If the dog wags its tail, then the dog is not calm.
II.) Either the dog does not wag its tail or the dog is not calm.
III.) If the dog is not calm, then the dog wags its tail.

a.)I,II, and III are equivalent
b.)I and II are equivalent
c.)II and III are equivalent
d.)I and III are equivalent
e.)None are equivalent