Which One of the Following Is the Best Example of Negative

Which one of the following is the best example of negative transfer?

A) Nell thinks that 5.75 is bigger than 5.9, because the former has more digits.
B) Fred knows he can get Bs in his classes without having to study at all.
C) José can't remember when the American Civil War started, so he recalls all he can about American history and concludes that the war must have taken place in the 1860s.
D) Edie wants to tie a string securely to her pencil so that she can hang it from her notebook, but she has forgotten how to tie a square knot.