A debt of $11753 is due at the end of 5 years. It is proposed that $x be paid now, with another $X paid in 10 years time to liquidate the debt. Calculate the value of X (amount in dollars) if the effective annual compounding interest rate is 5.1% for the first 6 years, and 6.5% for the next 4 years. O a. 5840.72 O b. 5699.32 O c. 5812.64 O d. 5596.75