Suppose That for a Question, 15% of People Selected Response

Multiple Choice

Suppose that for a question, 15% of people selected response "a", 20% selected response "b", 30% selected response "c" (which is the correct response) , and 35% selected response "d". Which item analysis data do you have for that item?

A) item difficulty analysis data
B) item discrimination analysis data
C) item distractor analysis data
D) both a and c