Sunspots Lie in the Photosphere

Sunspots lie in the photosphere. What influence do they have on the corona above them?

A) The magnetic fields arching upward from the sunspot conduct heat to the corona and cause ultraviolet and x-ray emissions from points directly above the sunspots.
B) The magnetic fields arching upward from the sunspot end directly on coronal holes.
C) Sunspots block energy from flowing to the corona, so the regions directly above sunspots tend to be cooler and to emit longer wavelengths of infrared.
D) The chromosphere acts as a shield between the photosphere and the corona, so these two layers do not influence each other.