20. ifgeneral solution of the differential equation ay +ey+dy =0 is linearly spanned by e", sinr and cos x, then which one of the following holds? (a) a+b-c-d=0

20. Ifgeneral solution of the differential equation ay +ey+dy =0 is linearly spanned by e", sinr and cos x, then which one of the following holds? (a) a+b-c-d=0 (b) at b +c+d=0 (c) a-b +c-d=0 (d) a-b-c-d=0 JAM CA-20081