Annuities where the payments occur at the beginning of each time period are called _____, whereas _______ to annuity streams with payments occurring at the end of each time period. a) annuities due:ordinary (or regular annuities) b) Ordinary (or regular) annuities, annuities due c) straight annuities, late annuities d) late annuities:straight annuities e) ordinary annuities:early annuities