A student must pass through 9 sets of traffic lights on his way to university each day. Suppose that each of the lights is red 40% of the time, yellow 10% of the time, and green 50% of the time. Suppose it is known that the traffic lights function independently. What is the probability that the student encounters exactly 4 green lights on his way to university one day?

Select one:

a.0.5

b.0.7460

c.0.2639

d.0.0106

e.0.2461