Imagine That the Following Question Appears on a Multiple Choice

Imagine that the following question appears on a multiple choice science exam: "The Nile River is the longest river in the world. What is the length of this river? a) 4,130 miles b) 4,135 miles c) 4,150 miles d) 4,175 miles" The author of this question violated which of the following general rules for constructing multiple-choice questions?

A) Beware of clues in the length of the options.
B) Answer choices should all grammatically match the stem.
C) Include as much of the item as possible in the stem.
D) Don't expect students to make narrow distinctions among answer choices.