For each of the following scenarios, how will these circumstances affect the recognition of revenue under the earnings approach and under the contract-based approach?
(a) The anticipated revenues on a contract are $10 million but the associated costs cannot be estimated.
(b) There is a 60-day price protection clause requiring the seller to provide a cash refund to the buyer if the purchase price goes down.
(c) A new product is launched for which the manufacturer will allow unlimited returns.