It has been suggested that + verb?

[joham]

So far it has been suggested that special stress _________ on pre-school education.

A. is laid B. be laid C. has been laid D. have been laid

The given answer is B. But I thought that A is OK too (in BrE) with the same meaning as B. And C is correct when 'suggest' means 'to say that something is likely to exist or be true'. Am I right?

Thank you in advance.

 

[bhaisahab]

So far it has been suggested that special stress _________ on pre-school education.

A. is laid B. be laid C. has been laid D. have been laid

The given answer is B. But I thought that A is OK too (in BrE) with the same meaning as B. And C is correct when 'suggest' means 'to say that something is likely to exist or be true'. Am I right?

Thank you in advance.

A and B are both correct. C is OK but a bit clumsy. It's a bad test question.