please help on easy math question! tyy
3. Consider the equation y = 0.75x. Which description fits the relationship shown in the equation?

(A) The cost of three candies is $0.75

B) Each car driving through a toll plaza pays a toll of $0.75. For every $100 she earns, Andreza donates $7.50 to charity.

C) for every $100 she earns, Andreza donates $7.50 to charity

D) A change machine collects 4 quarters for every $3.00 input, on average.