Let \overrightarrow{F} = (x+y-4)\hat{j}. Let S be the triangle as shown, oriented away from the origin.
(5,0,8)
z
y
(5,0,0)
(5,2,0)
x
Which of the following would be appropriate for $\overrightarrow{dA}$ in this case?
$\overrightarrow{dA} = -i\overrightarrow{dA}$
$\overrightarrow{dA} = 8i\overrightarrow{dA}$
$\overrightarrow{dA} = i\overrightarrow{dA}$
$\overrightarrow{dA} = 5i\overrightarrow{dA}$