15 The acceleration of an object moving along the x-axis is given by a(t) =18t-2, where the velocity is 12 m / sec when t = 2 sec and the position is 2 meters when * = 1 second. The position x(t) = (A) 973-12 - 20t+14 (B) 9t3-72 + 20t-26 (C) 3+3-12- 20t+20 (D) 3+3-12 + 20t-20 (E) +3-+2-20t+22