Restriction endonuclease functions by inspecting the length of a DNA sequence

Identify the correct pair of statements
(I) Exonucleases add nucleotides at the ends of DNA
(II) Restriction endonuclease functions by inspecting the length of a DNA sequence
(III) EcoRI recognizes 5’GAATTC3’ sites on the DNA and cuts it between G and A
(IV) The cloning vector should have high molecular weight
(a) (II), (III)
(b) (I), (II)
(c) (I), (IV)
(d) (II), (IV)