The manager of big box garden store agreed to purchase several truckloads of a popular "weed n' feed" lawn treatment from a local supplier subject to the manager receiving clearance from head office for the purchase. Before the clearance could be obtained, the municipal government passed a bylaw that banned the use of all "weed n' feed"-type products in the city. Which of the following is true?

a.If head office learns of the ban and does not provide clearance for the purchase, the manager would not be required to purchase the "weed n' feed."

b.The ban has no affect on the parties' contractual obligations

.c.Force majeureapplies, as the parties' contemplated clearance from head office.

d.Immediately on the bylaw passing, the contract would come to an end and the parties would be returned to their pre-contractual positions.

e.The contract would be frustrated, as the intervening event makes the basic object of the contract unattainable.