Which of the following is a true biconditional statement? O A. The product of two integers is odd if and only if the two factors
are odd.
B. If a figure does not have four sides, then the figure is not a square.
C. A U. S. citizen votes if and only if the person is at least 18 years
old.
O D. A number is a real number if and only if it is a positive integer