Given diseases: Pneumonia,Plague,Diphtheria,Common cold,Malaria,Ringworm,Amoebiasis,Dysentery,Typhoid,$AIDS$.
$\rightarrow$ Number of bacterial diseases $- P$
$\rightarrow$ Number of viral diseases $- Q$
$\rightarrow$ Number of protozoan diseases $- R$
$\rightarrow$ Number of fungal diseases $- S$
Select the correct option for $P, Q, R$ and $S$.

• A
  $P=3, Q=2, R=2, S=1$
• B
  $P=2, Q=5, R=2, S=1$
• C
  $P=3, Q=2, R=1, S=4$
• D
  $P=3, Q=3, R=1, S=3$