Sophia inherits inherited money from her grandparents. She inherits $100,000 from her grandparents, today. She has exactly 20 years to retire and she decided to put the entire amount into 20 years, 4% annual interest annuity.

A) Assume that she did not deposit any additional amount into this account, compute your account balance by the time she retires. Please compute the problem using a scientific calculator (not a financial one) using the appropriate formulas and show your calculations step by step!

B) Now assume that in addition to this initial $100,000, you also contributed $500 at the end of each month until you retire. Now, using the relevant formulas and a scientific calculator, reproduce Highlight the end balance, total principal, and total interest, step by step please!