The reason stars more than about 100 times as massive as the sun are not found is

Question:

The reason stars more than about 100 times as massive as the sun are not found is that
a. They would split into double-star systems
b. They would be black holes from which no light can escape
c. The gravity of such a star would not hold it together against the pressure produced by nuclear reactions in its interior
d. The high internal pressures would prevent nuclear reactions from taking place