Which of the following statements are not true regarding functions? Check all that apply.
A. A sequence is a function whose domain is the set of natural
numbers
OB. A function is a relation in which each value of the input variable is
paired with at least one value of the output variable.
I c. The horizontal line test may be used to determine whether a
function is one-to-one.
O D. The vertical line test may be used to determine whether a function
is one-to-one.