Swap rates are derived from the yield curves in each major currency

If capital markets are efficient, then:

A) There is no reason to believe that prices are too high or too low. B) It is not possible to make money by playing the stock market. C) Prices will adjust slowly when reacting to new information. D) Historical price trends will give you a good idea of where prices are headed in the future. E) It is possible to profit regularly from publicly available information.

A clerk accidentally posts a prenumbered sales invoice of $625 as $265 to a customer's account. What control would detect this error?

A) A hash total of the invoice numbers B) A sequence check of the numbers of the invoices which are to be posted C) A document count of the invoices D) A control total of the amounts to be posted