Use the Following Information for Questions

Multiple Choice

Use the following information for questions
Suppose there is one depositor who earns an income of $100 in each period.She spends $50 for consumption and the remainder goes to her savings account.Assume that a bank doesn't do anything with this money except safeguards it.The bank charges $5 for safeguarding fee.
-If there are two merchants who wish to borrow $100 at t = 0, and the bank charges 18% loan rate, what is the bank's aggregate profit from lending?

A) $66
B) $42
C) $36
D) $18
E) $0