The data below shows the number of worker?

employed in the various sections of a construction

company in Lagos.

Carpenters 24 Labourers 27

Plumbers 12 Plasterers 15

Painters 9 Messengers 3

Bricklayers 18

If a worker is retrenched, what is the probability that he is a plumber or plasterer.

• A 1/27
• B 1/9
• C 5/36
• D 1/4
• E 3/4