# GATE | GATE CS 2011 | Question 62

P, Q, R and S are four types of dangerous microbes recently found in a human habitat. The area of each circle with its diameter printed in brackets represents the growth of a single microbe surviving human immunity system within 24 hours of entering the body. The danger to human beings varies proportionately with the toxicity, potency and growth attributed to a microbe shown in the figure below:

A pharmaceutical company is contemplating the development of a vaccine against the most dangerous microbe. Which microbe should the company target in its first attempt?
(A) P
(B) Q
(C) R
(D) S

**The danger to human beings varies proportionately with the toxicity, potency and growth attributed to a microbe**

```P = 800*0.4*50 = 16000
Q = 600*0.5*40 = 12000
R = 300*0.4*30 = 3600
S = 200*0.8*20 = 3200```
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