Numerically approximate the solution to the differential equation (18 = . 4B dt 00 with initial value B = 900 when t = 0. Compute each value using linear approximation (this method is also called Euler's method). A. At = 1 and 1 step: 3(1) m B. At = 0.5 and 2 steps: 3(1) % C. At : 0.25 and 4 steps: 3(1) 2