The point (40, -9) is on the terminal arm of Angle A. Which is the set of exact primary trigonometric ratios for the angle?
Select one:
a. $\sin A = \frac{-9}{41}, \cos A = \frac{40}{41}, \tan A = \frac{-9}{40}$
b. $\sin A = \frac{40}{41}, \cos A = \frac{-9}{41}, \tan A = \frac{-40}{9}$
c. $\sin A = \frac{-40}{41}, \cos A = \frac{9}{41}, \tan A = \frac{-40}{9}$
d. $\sin A = \frac{-9}{41}, \cos A = \frac{40}{41}, \tan A = \frac{-9}{40}$