Which Of The Following Sentences Contains An Abstract Noun

Which of the following sentences contains the abstract name? 3

A. He is legendary.

B. Logic is easy to understand.

C. The vase is very expensive.

D. He gave her a dish towel.

Logic is an abstract name, a kind of love, loyalty, etc.

Hmmm ... or A or B ... wait no, I think it's B

Which Of The Following Sentences Contains An Abstract Noun