On January 2021, you buy a 10-year coupon bond with coupon payments of $10,000 per year and a final value of $100,000. The yield to maturity of this bond is 10 percent. On January 2022, you collect your first coupon and sell the bond in the bond market. On January 2022 the yield to maturity of this bond decreases to 8 percent. Calculate the following:

a. holding period return rate

b. current yield rate

c. capital gain rate

Please include formulas and calculations.