GMAT Critical Reasoning (CR) | Re: Only senior citizens enjoy doing the daily jumble. So Aesha must

I'm not an expert but I can try and help.

Only senior citizens enjoy doing the daily jumble. So Aesha must not be a senior citizen, because she does not enjoy doing the dailyjumble.
a implies b ---->not b implies not a
Which of the following arguments exhibits the same flawed reasoning as the above?

B. Only a true pet lover could adopt Marley. Thus, since Michael is not adopting Marley, he
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