Which of the following formulas would be used to calculate the trapezoid approximation of 1'02 x/l + a: (in: using four subintervals? 0 T4 : g - ['/1 +0.0+2'/1 +0.5 +21+ 1.0 +21+ 1.5 + 1 +2.0] 0 T4 : %[\\/1 +0.0+2\\/1 +0.5 +21+ 1.0 +2\\/1+ 1.5 + w +2.0] 0 T4 : [1/1 + 0.0 + 21/1 + 0.5 + 21 + 1.0 + 2\\/1 + 1.5 + \\/1 + 2.0] 0 T4 : g - [\\/1 + 0.25 + 2\\/1 + 0.75 + 2J1 + 1.25 + 21/1 + 1.75]