Based on the provided information about languages L and L/a, what inference can be drawn about the regularity of L/a if L is regular?
a) Is L/a necessarily regular if L is regular?
b) Does the regularity of L guarantee the regularity of L/a?
c) Can it be assumed that L/a is regular when
L is regular?
d) Is there a correlation between the regularity of L and L/a?