An Olympic archer is able to hit the bull's eye 75% of the time. Assume each shot is independent of the others. If she shoots 6 arrows, what is the probability of each of the following results?
A. Her first bull's eye comes on the fourth arrow.
B. She misses the bull's - eye at least 1.
C. Her first bull's eye comes on the 2nd or 5th arrow.
D. She gets exactly 4 bull's - eye.
E. She gets no less than 4 bull's - eye.
F. She misses 1 or all of them.