If the demand function for a monopolist is P $=16-$ Q and her marginal revenue is MR $=16-2$Q$.$ Her cost function is C$($Q$)=6$Q:

Group of answer choices

The optimal production of the monopolist is Q $=5.$

The perfectly competitive price would be P $=6$ if all the competitors had the same costs as the monopolist.

The deadweight loss from monopoly is $12\mathrm{.}5.$

All of the above are correct.

None of the above are correct.

Group of answer choices

The demand for low$-$calorie fruit and vegetables rises by $8\mathrm{.}3\%.$

The quantity the consumer consumes before the price change is $344$g per week.

The quantity the consumer consumes after the price change is $876\mathrm{.}25$g per week.

The consumer$$s expenditure on low$-$calorie fruit and vegetables increases by $$0\mathrm{.}08.$