When X -gal is included in the agar medium, colonies carrying (a) parental non recombinant plasmids become deep blue, whereas (b) recombinant plasmids remain an ordinary creamy white or become tinted in pale egg-shell

Question

( A ) (a) false, (b) false
( B ) (a) false, (b) true
( C ) (a) true, (b) true
( D ) (a) true, (b) false