An investor purchased a 91​-day, ​$10 comma 000.00 ​T-bill on its issue date for $ 9952.01 . After holding it for 52 ​days, she sold the​ T-bill for a yield of 1.69 %. ​(a) What was the original yield of the​ T-bill? ​(b) For what price was the​ T-bill sold? ​(c) What rate of return​ (per annum) did the investor realize while holding this​ T-bill?