Suppose Market Demand for Bottled Water in the U

Suppose market demand for bottled water in the U.S.is low enough that one firm could supply all of the demand.Two firms enter the market and agree to charge a price above the marginal cost of production.We can expect that:

A) they will make a considerably large profit.
B) they will work better than a cartel.
C) this agreement will collapse.
D) if one firm does not honor the agreement the other firm will sue for breach of contract.