Let H represent the number of days a randomly selected patient spends on admission while undergoing a certain medical procedure at a hospital. Suppose that the probability distribution of H is as shown in the following table:

H	3	4	5	6	7
P(H)	0.15	0.2	0.35	0.2	0.1

A) Calculate P(H <5) and provide an explanation.

B) The hospital charges $900 per day for nursing care. Find the mean cost of nursing care for a randomly selected patient.