If a U.S. company is preparing a journal entry for a recent purchase, foreign-currency-denominated purchases must be measured in ________ at the purchase date using the foreign currency ________ rate on the purchase date

Audit evidence is generally considered sufficient when:

a) It is from a creditable source. b) It pertains to the audit objective. c) It has been obtained from a random sample. d) There is enough to support well-founded conclusions.

A minimization model of a linear program contains only surplus variables

Indicate whether this statement is true or false.