Read the following statements and select the correct ones.
(i) Electrophoresis is a technique used for the separation of molecules based on their size and charge.
(ii) Plasmids are extra-chromosonmal, self-replicating, usually circular, double standard DNA molecules found naturally in many bacteria and also in some yeast,.
(iii) It is not advisable to use an exonuclease enzyme while producing a recombinant DNA molecule.
(iv) In EcoRl, the roman numberal I indicates that it was the first enzyme isolated from E. coli Rt 13.

Options

A. (i) and (ii)
B. (iii) and (iv)
C. (i),(ii) and (iv)
D. (i),(ii),(iii) and (iv)

Answer

D