C-10-Q016mediumsingle_mcq(1+y)2(1+y)^2(1+y)2 এর বিস্তৃতি-a1+y21 + y^21+y2b1+2y+y21 + 2y + y^21+2y+y2c1+y+y21 + y + y^21+y+y2d2+2y+y22 + 2y + y^22+2y+y2