What's the meaning of 「これはというもの」?


I'm solving exercises for N1 level and I came across this question.

> 新しい家に飾る絵を探しているが、なかなか＿＿というものが見つからない。
>
> A. これか
>
> B. これは
>
> C. これさえ
>
> D. これだけ

The correct answer is B but I think it should be C.

I don't understand what the grammar point of 「これはというもの」is.




「これは」 is an expression which indicates surprise, or something that's giving
the speaker pause, along the lines of _"Wait, this one..."_. Anything coming
before a 「という」 should be taken as literal exclamation; so rather than 「はという」,
the sentence really is:

> なかなか「これは」というものが見つからない。

Which means _"I can't really find anything that makes me go 'This is it.'"_ ,
or _"...that I find worth considering."_




「これは」 is an expression which indicates surprise, or something that's giving
the speaker pause, along the lines of _"Wait, this one..."_. Anything coming
before a 「という」 should be taken as literal exclamation; so rather than 「はという」,
the sentence really is:

> なかなか「これは」というものが見つからない。

Which means _"I can't really find anything that makes me go 'This is it.'"_ ,
or _"...that I find worth considering."_

