Could be false. We have no information in the stimulus about the number of bottles being sold.

Must be true. We can combine the facts that profit is a function of the wholesale price minus the cost of bottles and corks, corks today are twice as expensive, and the wholesale price is the same today as it was in 1991.

Could be false. We have no information in the stimulus about the costs to cork makers. We know the cost of a cork to a winegrower is higher today, but that doesn't reveal the cost to the cork maker.

Could be false. Although we know that each bottle sold today brings less profit than each bottle sold in 1991, this doesn't reveal anything about the aggregate profit. Aggregate profit is the profit of each bottle sold multiplied by the total number of bottles sold. We have no information in the stimulus about the number of bottles sold.

Could be false. We have no information about the relative cost of corks and bottles. We cannot assume that just because corks have doubled in price that means corks are more expensive than bottles. We know only that corks today are twice as expensive as corks in 1991.