Which of the clouds shown would indicate a possible future rain storm?

Cirrostratus and Cirrostratus

Cirrocumulus-looks like fish scales, suggests a storm may come.

Cirrostratus-thin sheets, give sky a white or translucent appearance. Usually come 12-24 hours before rain/snow.

the answer is either b or c

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be