Given below are the pairs of pathogens and the diseases caused by them. Which out of these is not a matching pair and why?
$(a)$ Virus - Common cold
$(b)$ Salmonella - Typhoid
$(c)$ Microsporum - Filariasis
$(d)$ Plasmodium - Malaria

Diseases spread through water medium $- P$
Diseases spread through air medium $- Q$
Diseases spread through insect vectors $- R$
$I -$ Common cold,$II -$ Amoebiasis,$III -$ Typhoid,$IV -$ Filariasis
$V -$ Pneumonia,$VI -$ Malaria,$VII -$ Ascariasis
Select the correct option for $P, Q$ and $R$.
$\quad P \quad\quad Q \quad\quad R$

Which of the following statements is false?

Which of the following is an incorrect match?

Which of the following is correctly matched?

Which pair represents diseases spread through the air?