I have two questions for Astronomy which I can't, for the life of me, figure out...

[pyro_child_kkd]

...the answers for.? 1. Suppose that a neutron star of 2.8 solar masses is part of a binary star system in which the other star is a
normal giant star. What would happen if half a solar mass of material were transferred onto the neutron star
from its companion?
A) The neutron star would collapse and become a black hole.
B) The increased gravitational force would transform the neutrons into quarks, and the neutron star would
re-establish equilibrium as a quark star of smaller diameter.
C) The neutron degeneracy pressure inside the neutron star would increase to balance the increased
gravitational force within the neutron star.
D) The neutron star would explode as a supernova.

2. If an astronomical source of electromagnetic radiation is observed to flicker, with intensity changes in as
short a time as 1/30 second, how large is the emitting region?
A)10,000 km, a little smaller than the Earth
B)1/30 light-year
C)9 × 106 km, about 6 times the size of the Sun
D)10,000 m, about the size of a small city or town