Which among the following compounds is used to decaffeinate coffee?

Match List-$I$ with List-$II$ and pick the correct matching from the codes given below:

List-$I$ (Haloalkane/arene)	List-$II$ (Application)
$A$. Iodoform	$1$. $CF_4$
$B$. $BHC$	$2$. Antiseptic
$C$. Freon-$14$	$3$. Moth repellent
$D$. Halothane	$4$. Inhalative anaesthetic
$E$. $p$-Dichlorobenzene	$5$. Termite pesticide

Major product obtained on reaction between chlorobenzene and chloral taken in $2:1$ ratio in acidic condition is

Chloral $+$ Chlorobenzene $\xrightarrow{\text{Conc. } H_2SO_4}$ product.
The product is :

The commercial name of trichloroethene is:

Some halogen-containing compounds are useful in daily life. Some compounds of this class are responsible for the exposure of flora and fauna to increasing amounts of $UV$ light,which causes significant destruction. Name the class of these halocompounds. In your opinion,what should be done to minimize the harmful effects of these compounds?