The revenue from selling movie tickets is given by the function r(t) = 10t, where "t" is the number of tickets sold. the theater holds a maximum of 200 people. the profit is a function of the revenue "r" and is given by the function p(r) = 0.20r. what is the domain of the profit function p(r)?

a)
{0, 1, 2, 3, , 200}

b)
{0, 10, 20, 30, , 2000}

c)
{any nonnegative real number ≤ 200}

d)
{any nonnegative real number ≤ 2000}