Determine how many times the amount of heat given to the environment by a stationary conductor at its constant

Determine how many times the amount of heat given to the environment by a stationary conductor at its constant temperature will change if:
a) double the current in the conductor;
b) reduce the time of current flow at a constant current strength by 4 times;
c) with a constant current strength, increase the length of the conductor by 2 times;
d) at a constant current strength, reduce the cross-section of the conductor by 5 times;
e) with a constant voltage between the ends of the conductor, replace it with another one having the same dimensions, but made of a different material with a 2 times lower specific resistance;
f) reduce the voltage between the ends of the conductor by 2 times.

A) Will increase 4 times
B) Will decrease by 4 times
C) Will increase 2 times
d) Will increase 5 times
E) Will increase 2 times
F) Will decrease by 4 times