Use of the effective-interest method in amortizing bond premiums and discounts results in A. a varying amount being recorded as interest income from period to period. B. a smaller amount of interest income over the life of the bond issue than would result from use of the straight-line method. C. a greater amount of interest income over the life of the bond issue than would result from use of the straight-line method. D. a variable rate of return on the book value of the investment.