Question regarding lac operon

Put an X on the line if the re will be a high level of transcription of the operon.

             Lactose p resent; glucose absent

             Lactose p resent; glucose p resent

             Lactose absent; glucose absent

             Lactose absent; glucose p resent

             lacI gene constitutively exp ressed; lactose is p resent and glucose is absent

    Mutation in the lacI gene that p revents its p roduct from binding allolactose; lactose is present and glucose is absent

    Mutation in the lacI gene that p revents its p roduct from binding to the operato r at all; lactose is absent and glucose is absent

    Mutation in adenylyl cyclase that p revents its inhibition by glucose ; lactose is absent and glucose is p resent

    Mutation in adenylyl cyclase that p revents its inh ibition by glucose; lactose is p resent and glucose is p resent