Provide an Appropriate Response $f(x) \geq 0$ On the Interval $[a, b]$

Provide an appropriate response.
-If $f(x) \geq 0$ on the interval $[a, b]$ , then $\int_{a}^{b} f(x) d x$ represents
i. the area to the right of the $y$ -axis between $y=a$ and $y=b$ .
ii. the area above the $x$ -axis between $x=a$ and $x=b$ .
iii. the area below the $x$ -axis between $x=a$ and $x=b$ .

A) None of the above is correct.
B) Both ii and iii could be correct.
C) Only ii is correct.
D) Only $i$ is correct.