Mrs Grundy Believes That Boarding Schools Provide the Best Education

Mrs. Grundy believes that boarding schools provide the best education because after attending such a school, she found herself well prepared for college. The fallacy in her thinking is

A) the experience used as evidence has not been shown to be representative.
B) Mrs. Grundy may not know what she is talking about without having observed it firsthand.
C) she has not generalized.
D) she didn't really go to boarding school.
E) she has treated an inference as a fact.