Which of the Following Is Not a Way Though Which

Multiple Choice

Which of the following is not a way though which one can avoid underestimating expenses?

A) Through using software programs detailing records of expenditures.
B) Through avoiding hard copies of records of checks paid and actual bank and investment account cash deposits and withdrawals.
C) Through recording after tax income plus other cash inflows and subtracting the amounts deposited into savings accounts.
D) All of the above are ways through which one can avoid underestimating expenses.
E) None of the above is a way through which one can avoid underestimating expenses.