Problem 23. (2 marks) \" 2 / 22' 1' E 1 Til{ISO i=1 n + n is equal to (A) the area under the graph of f (x) = for 0 g x S 2 ) the area under the graph of x) 2 for 1 g x g 3 C) the area under the graph of f($) = x/l + 230 for 0 g a: S 1 D) the area under the graph of f(:r) = x/l + 2:10 for 1 g a: S 3 E) none of the above (B ( ( (