A final image can coincide spatially with the original object after two mirror reflections. Which statements can be true?

Select all that apply

• Option A

  The intermediate image may be real.

• Option B

  The intermediate image may serve as a virtual object for the second mirror.

• Option C

  The total transverse magnification need not automatically be +1 solely from positional coincidence.

• Option D

  The two mirrors need not have equal focal lengths.