DIRECTIONS for Questions: Answer the questions on the basis of the following information.

The plan below shows an office block for six officers, A, B, C, D, E, and F. Both B and C occupy offices to the right of the corridor (as one enters the office block) and A occupies an office to the left of the corridor. E and F occupy offices on opposite sides of the corridor but their offices do not face each other. The offices of C and D face each other. E does not have a corner office. F's office is further down the corridor than A's, but on the same side.

Who is/are F's neighbour(s)?