Which catalyst is used in the following reaction?

Given below are two statements. One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: $[6]-$Annulene,$[8]-$Annulene and cis$-10-$Annulene are respectively aromatic,non-aromatic and non-aromatic.
Reason $R$: Planarity is one of the requirements of aromatic systems.
In the light of the above statements,choose the most appropriate answer from the options given below.

In the following sequence of reactions,the maximum number of atoms present in molecule $C$ in one plane is:
$A$ $\xrightarrow[Cu \text{ tube}]{\text{Red hot}} B$ $\xrightarrow[\text{Anhydrous } AlCl_3]{CH_3Cl (1 \text{ eq})} C$
($A$ is the lowest molecular weight alkyne)

Which of the following would be most reactive towards nitration?

What are the necessary conditions for any system to be aromatic?

In the reaction of benzene with dichloromethane $(CH_2Cl_2)$ in the presence of anhydrous $AlCl_3$,the intermediate product '$A$' is: