Which of the following non-metals are lustrous?

A mineral's lustre is essentially a measurement of how effectively it reflects light. Diamond and iodine are the two non-metals that have shine.
Diamonds are cold and at room temperature because of heat conduction. It shines brilliantly. It has a lot of fire and sparkle, which gives the impression that it has just been polished.
Iodine: Metals are lustrous, ductile, and heat- and electricity-conductive. Iodine is not a nonmetal; it is a metalloid. The characteristics of both metals and nonmetals are present in metallicoids. Iodine is hence both metal and non-metal.

Gloss is basically a characteristic of minerals and indicates how well they reflect light. 

The two shiny non-metals are diamond and iodine.  

In diamonds, because of conduction, they are cold and at room temperature. It has a wonderful glow. It shows a wonderful fire and shine that gives it a shiny, freshly polished look. 

Iodine is a metalloid, not a non-metal. Metalloids exhibit both metallic and non-metallic properties. Therefore, iodine is both metallic and non-metallic. Iodine is lustrous.

Hence, option A and B is correct.