Let f be a positive continuous function. The area below the graph of f from a to b is given by n A = lim f(:)Ar. n2-100 1-1 What is the value of Ax, if [a, b] = [-10, 10) and n = 5? Select one: O 1 Cross OU O2 CROSS OU 03 O4 CROSS OU CROSS OL