Which one is not a restriction enzyme?

Which of the following acts as a vector?

Given below are two statements :-
Statement-$I$ : Restriction endonucleases recognize specific sequences to cut $\text{DNA}$ known as selectable nucleotide sequences.
Statement-$II$ : Restriction endonucleases cut the $\text{DNA}$ strand a little away from the centre of the palindromic site.
In the light of the above statements,choose the most appropriate answer from the options given below :-

Two bacteria found to be very useful in genetic engineering experiments are

Each restriction endonuclease functions by inspecting the length of a $DNA$ sequence. It cleaves $ . . . . $

Match the column-$I$ with column-$II$ with respect to the nomenclature of enzyme $Eco RI$ and select the correct answer from the codes given below.

Column-$I$	Column-$II$
$(A) E$	$(1) 1^{st}$ in order of identification
$(B) co$	$(2)$ Name of genus
$(C) R$	$(3)$ Name of species
$(D) I$	$(4)$ Name of strain