The age distribution for politicians in a certain country is shown in the accompanying table. Suppose that a politician is selected at random. Let eventsA, B,C, and S be defined as follows. Complete parts(a) through(d) below.

A= event the politician is under 50

B = event the politician is in his or her 50s

C = event the politician is in his or her 60s

S= event the politician is under 70

Age (yr) No. of politicians

under 50 9

50-59 35

60-69 34

70-79 21

80 and over 3