Answer:
The false statement is letter "A": The effect of compounding is great over short time periods, but then it begins to decline as the horizon grows.
Step-by-step explanation:
Interest on interest or Compound Interest is the money accrued out of an interest rate plus all the interest earned accumulated on a certain period of time. The compound interest can be calculated on a daily, monthly or yearly basis. If the frequency of the compound interest is set in shorter periods of time, it will be more beneficial for the investor.
In that sense, option letter "A" is false since interest on interest does not decline over time but increases.