You bought one bitcoin in January 2018 for $14400 and sold it two years later for $10000. What was your holding period return and your annualized rate of return?

a. -15.3% holding period return and -30.6% annualized return

b. -30.6% holding period return and -16.7% annualized return

c. -44.0% holding period return and -22.0% annualized return

d. -30.6% holding period return and -15.3% annualized return