C-10-Q011mediumsingle_mcqThe expansion of (1+y)3(1+y)^3(1+y)3 is —a1+3y+3y2+y31+3y+3y^2+y^31+3y+3y2+y3b1+y+y2+y31+y+y^2+y^31+y+y2+y3c1+3y+y31+3y+y^31+3y+y3d1+2y+3y2+y31+2y+3y^2+y^31+2y+3y2+y3