When must the pilot initiate a missed approach procedure from an

When must the pilot initiate a missed approach procedure from an ILS approach?

A.At the DH when the runway is not clearly visible.

B.When the time has expired after reaching the DH and the runway environment is not clearly visible.

C.At the DH, if the visual references for the intended runway are not distinctly visible or anytime thereafter that visual reference is lost.

正确答案是C