Which of the following infection$(s)$ can be diagnosed by the use of polymerase chain reaction $(PCR)$?

How many of the following diseases can be classified as autoimmune diseases?
Rheumatoid arthritis,Myasthenia gravis,$AIDS$,$SCID$,Vitiligo,Hashimoto's disease,Multiple sclerosis,Cancer,Type-$I$ diabetes.

Match the diseases in Column-$I$ with their treatment in Column-$II$. Select the correct answer from the options given below.

Column-$I$	Column-$II$
$i$. Malaria	$a$. Chloromycetin
$ii$. Amoebiasis	$b$. Quinine
$iii$. Filariasis	$c$. Metronidazole
$iv$. Typhoid	$d$. Diethyl carbamazine citrate

Identify the given chemical structures and select the correct option.

Read the following statements carefully and identify the incorrect statement$(s)$.
$(1)$ In $AIDS$,the count of $CD4$ cells increases.
$(2)$ Malignant tumors are cancerous tumors.
$(3)$ Pneumonia is a life-threatening disease.
$(4)$ Asthma can be caused by allergies.
$(5)$ Antibodies are made up of $\gamma$-globulin proteins.

In the given diagram of the life cycle of Plasmodium,what does the part labeled '$A$' represent?