Three isomers A, B and C (mol. formula $$C_8H_{11}N$$) give the following results:
A and C $$\xrightarrow{Diazotization}$$ P + Q $$\xrightarrow[(ii) acidation(KMnO_4+H^+)]{(i) Hydrolysis}$$ R (product of A) + S (product of C)
R has lower boiling point than S
B $$\xrightarrow{C_6H_5SO_2Cl}$$ alkali-insoluble product
A, B and C, respectively are:

A

B

C

D