Although Neutron Stars Are Very Hot,they Are Faint and Not

Multiple Choice

Although neutron stars are very hot,they are faint and not easy to see at visual wavelengths.Why is this?

A) Light does not escape from their event horizon.
B) Most neutron stars lie beyond dense dust clouds.
C) They have only a small surface area from which to emit light.
D) The peak of their thermal emission is at infrared wavelengths.