. . f(x) = a b, in red, g(x) = c d, in blue, and h(x) = p q, in green, graphed below where a, b, c, d, p, q are constants. For each statement below, enter all of the possible constants (letters a, b, c, d, p, or q) as a list of letters in any order without any separating commas. For example a possible answer could be apdq which is equivalent to paqd (or any other order of these four constants), but a, d, p, q would not be graded correctly because it includes commas. (a) Which of these constants are definitely positive? (b) Which of these constants are definitely greater than 1? (c) Which of these constants could possibly be between 0 and 1? (Click on graph to enlarge) (d) Which of these constants could possibly be greater than the value of c? (e) Which two of these constants are definitely equal? f(x)=a(b)x