3] A gazelle moves along the x-axis according to the position equation; t 6 =_ _ 3 at) 20+9t +12: Which of the following best rcpresents both the 1Irelocitj,r and the acceleration of the animal at tiine t= 41] seconds? (A) v = +1 as. m, a = +S. ma.2 (E) v = +1o1o. ma, a = +1o4o. ma2 {C} v = +92. me, a = +651] mo? (13) v = +120. ma, :1 = +80. m? {E} v = + 290. mm, a = + an. moi