Bill and lisa are surveying their classmates about their summer reading. their questions are given below: bill: how many books were recommended by the book reading club this month? lisa: how many books did you read from the recommended list? who wrote a statistical question and why? a. lisa, because there can be only one answer to the question b. bill, because there can be many answers to the question c. lisa, because there will be variability in the responses collected d. bill, because every student will give the same answer