Spectral Lines Observed in the Granules Seen at the Center

Multiple Choice

Spectral lines observed in the granules seen at the center of the Sun's disk are

A) split by the Zeeman effect due to the strong magnetic fields in the granule.
B) always redshifted because granules are caused by gas descending into the Sun from higher layers.
C) redshifted near the center of the granule and blueshifted near the edge of the granule.
D) blueshifted near the center of the granule and redshifted near the edge of the granule.