C-10-Q017mediumsingle_mcq(1+y)3(1+y)^3(1+y)3 এর বিস্তৃতি-a1+3y+3y2+y31 + 3y + 3y^2 + y^31+3y+3y2+y3b1+y31 + y^31+y3c1+y+y2+y31 + y + y^2 + y^31+y+y2+y3d1+2y+2y2+y31 + 2y + 2y^2 + y^31+2y+2y2+y3