Answer:
B. Interrogative
Step-by-step explanation:
Reflective pronouns- that, which, who, whose, whom, where, when
Interrogative pronouns-who, what, why, where, when, whatever.
Who can be either be relative or interrogative. However, Interrogative "who" is used when asking questions while reflective is not.
Ex:
Reflective- It was I who ate all your chicken nuggets.
Interrogative- Who took all my toilet paper?