Question 3 (1 point) Saved To approximate fall (x - 1) da using Riemann sum, the partition of 4 subintervals each length 2 are: ( a) [1,3], [4,6], [7,9], [9,11] ( b) [3,5], [5,7], [7,9], [9,11] O c) [2,4], [5,7], [8,10], [11,13] O d) [3,5], [6,8],[9,11], [12,14] O e) None of the aboveBy choosing u; as the left endpoint of each subinterval [1,3], [3,5], [5,7], [7,9], the approximate S (x - 5) da using Riemann sum is ( a) 40 O b) 48 O c) 24 O d) 34 O e) None of the above