How to solve below verbal question

How to solve below verbal question using math strategy?

How would you solve it?

I can say its contrast because of unlike..but I am too caught up in details, not able to guess the words for blank

"Unlike problem A,

problem B is due to ambiguity"- not due to \underline{opposite~of~ambiguous=intentional} transactions designed to \underline{cause} problems = corporate malfeasance.

Notice how, though B2 prediction isn’t exactly an option, the correct answer is in that logical neighbourhood.

It is also important to realize “- not to…” describes Problem B. That is why we can just reverse ambiguous.

Thanks @Kweku !