Fisheries biologists believe that the changes in the populations of Antarctic baleen whales can be described with the following logistic growth function (quantities are in BWUs, Baleen Whale Units).

Assume the price of a BWU is $7,500, the cost of effort (c) is $600,000 per whale-catcher year. The productivity of whaler effort (q) is 0.002 per whale-catcher year.

What will be the sustained stock of whales per year? There is a minimum sustained stock, and a maximum sustained stock.

Question options:

1) Sustained population (whale-units) at least 40,000 BWU but not more than 220,000 BWU

2) Sustained population (whale-units) never less than 300,000 BWU

3) Sustained population never less than 160,000 BWU but never more than 200,000 BWU

4) Sustained population never less than 200,000

5) Sustained population (whale-units)