Sentence Correction

ok.... agree

for options A , this is a clear case of sentence fragmentation.

ideally if you refer Manhattan blogs --> you will find this rule used :

ed participle modifies the preceding noun, not the subject of the clause
ing participle modifies the subject of the preceding clause.

( both if occur at the end of the sentence )

I am not saying that A is correct,

but the reasoning given for the Incorrect option A is Wrong.

I personally understand why B is correct, but I would say that it can be considered as "Akward", don't you think?