,which, who, that??? Please help me

[annieachenn]

Dear teachers,
I wonder if you can help me figure out a question about grammar on our monthly exam. I hope I can get some information from native English speakers. (I teach Chinese students.) The following are the two questions.
1. Catherine had a violent quarrel with her boyfriend _____ made her feel heartbroken.
(A) which (B) who (C) that (D) ,which
2. Jenny received a bunch of roses from her secret admirer ____ put her in an excellent
mood.
(A) which (B) who (C) that (D) ,which
The anwers to these two questions are (D), but I wonder if (B) and (C) are also grammatical or acceptable. Would you please kindly take some time to answer my questions? Thank you very much.

[xiahuangtiao]

these two are "non-restrictive attributive clauses"
so pls Pay attention to the use of commas in the Non-restrictive Attributive Clause.
after the comma,"which" represents the sentence before the comma
i hope i've solved your problems