C-03-Q072mediumsingle_mcq4x2−9=?4x^2 - 9 = ?4x2−9=?a(2x−3)(2x+3)(2x-3)(2x+3)(2x−3)(2x+3)b(2x−3)2(2x-3)^2(2x−3)2c(2x+3)2(2x+3)^2(2x+3)2d(4x−9)(x+1)(4x-9)(x+1)(4x−9)(x+1)