The wording of this question is confusing me... would really appreciate any insight. Thx!

At the beginning of the year, William bought 20 shares of Zync Corporation at $18.50 per share. Zync pays dividend at the end of each year based on annual profits, which generally vary substantially from year to year. In its 25 years history, Zync has paid dividends every year without fail. The initial investment by William and the receipt of dividend at the end of every year are examples of a(n) _____ and a(n) _____, respectively.

uneven cash flow stream; annuity due

uneven cash flow stream; ordinary annuity

lump-sum payment; annuity due

lump-sum payment; uneven cash flow stream

lump-sum payment; ordinary annuity