Answer:
A. inconsistent reasoning; saving $20 is saving $20
Step-by-step explanation:
As it is mentioned in the question that the electronic store offering a flat $20 off for all prices in the store
Now if Tony chooses with a price of $50 so it would be good offer but for $500 it won't be a good offer as if he invested large value of amount and in return he gets only $20 off which is not a good deal of course.
Therefore this given situation sets an example for inconsistent reasonings
Hence, the correct option is A.