Select the correct option for the $Ti$ plasmid.

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 :-

Which enzyme cuts $DNA$ at specific sites?

Which microorganism is useful for $PCR$?

Which of the following restriction enzymes produces blunt ends in $DNA$?

Which enzyme is known as molecular scissors?