Considering the Memory and Unification Components of Hagoort's Model of Language

Considering the Memory and Unification components of Hagoort's model of language comprehension, during a conversation with your professor,

A) memory would be working to remember what your professor was saying.
B) unification would be integrating information your professor was saying with information you previously knew about the subject.
C) memory would be recalling the previous interactions you'd had with your professor.
D) unification would be pulling together and integrating various components of the words coming out of your professor's mouth to process what she was saying.