Which of the following reasons explains why the sum of 13+16√3 is a rational number? A. Since 13 and 16√3 both have terminating decimals when written in decimal form, their sum is a rational number. B. A rational number is any number that can be graphed on a number line. Since 13 and 16√3 can both be graphed on a number line, their sum is a rational number. C. Rational numbers are whole numbers along with their opposites. Since 13 is the opposite of the whole number 3 , and 16√3 is the opposite of 316√ , their sum is a rational number. D. Both 13 and 16√3 and are rational numbers. Therefore, their sum is a rational number.