Which one of the following limits gives the slope of the tangent line to the graph of the function f(x) = Vx2 + 2x + 6 at (1, 3)? Vh2 + 4h +9- 3 O A. lim h- 0 h V3h +1 - 1 O B. lim h-0 h C. lim Vh2 + 8h+21 -3 h-0 h O D. lim Vh2 + 4h +9-3 h-1 h Vh2 +8h + 21 -3 O E. lim h - 3 h Reset Selection OCT ... W N P O 20 8 . .. as tv Oul TA MacBook Air