The contour map of a differentiable function f:R2Ris shown on the region D={-3x3,-2y2}.Each level curve is labeled by the corresponding value off.Page 2(a) Find the gradient offat(0,1).(b) Circle the best estimate for the absolute maximum value offonD :DNE 0.5,1.5,2.5,3.5,4.5,5.5,6.5,7.5,8.5,9.5,10.5,11.5(c) Circle the best estimate for the absolute minimum value offonD :DNE -11.5,-10.5,-9.5,-8.5,-7.5,-6.5,-5.5,-4.5,-3.5,-2.5,-1.5,-0.5(d) Which relation is correct:A.|gradf(A)|>|gradf(B)|B.|gradf(A)|=|gradf(B)|C.|gradf(A)|<|gradf(B)|(e) The directional derivative Dvec(u)f(P)is:A. negativeB. zeroC. positive