20. Tammy sold a diamond ring for $10,000. She placed half of the money into a CD with a 3.9% interest

rate compounded daily. She placed the other half into a CD with the same interest rate but compounded

monthly. What is the difference in the interest earned on each amount after 4 years?

a. $1.43

b. $2.85

c. $125.31

d. $128.16