Programs I and II below are each evaluated to calculate the sum of the integers from 1 to n. Assume n is a positive integer (e.g., 1, 2, 3, ...).

Which of the following best describes the behavior of the programs?

Summary Submit

Program I and II both work. Take the hypothetical case n = 4

Program I would do this:

$$ 0 + 1 $$ $$ 1 + 2 $$ $$ 3 + 3 $$ $$ 6 + 4 $$ $$ = 10 $$

Program II would do this:

$$ 0 + 4 $$ $$ 4 + 3 $$ $$ 7 + 2 $$ $$ 9 + 1 $$ $$ = 10 $$