Which of the Following Statements Is Correct About Implicit Alternatives

Which of the following statements is correct about implicit alternatives?

A) The split ballot technique should be used to rotate the order in which a list of alternatives appear.
B) Making an implied alternative explicit may increase the percentage of people selecting that alternative.
C) When alternatives are close in preference or large in number,the alternatives at the end of the list have a greater chance of being selected.
D) All of the above are correct.