A.⎣(i+1)/2⎦ B.⎣(i-1)/2⎦ C.⎣i/2⎦ D.⎣i/2⎦-1
A.2i B.2i-1 C.2i+1 D.2i+2
A.⎣(n-1)/2⎦ B.⎣n/2⎦ C.⎡n/2⎤ D.⎣n/2⎦-1