Identify the correct expression for the effective annual rate (EAR).​

Identify the correct expression for the effective annual rate (EAR).​
Select one:
a. ​(1 + Periodic rate of interest)^{number of borrowing (interest) periods in one year} - 1
b. ​(1 / Periodic rate of interest)^{number of borrowing (interest) periods in one year} - 1
c. ​(1 - Periodic rate of interest)^{number of borrowing (interest) periods in one year} + 1
d. ​(1 - Periodic rate of interest)^{number of borrowing (interest) periods in one year} - 1
e. ​(1 + Periodic rate of interest)^{number of borrowing (interest) periods in one year} + 1
Sarah invests $2700 today in an account that pays 6 percent interest compounded annually. She wants to know the total balance in her account five years from today. Identify the correct keystrokes to be used in a financial calculator to determine the total balance.​
Select one:
a. ​N = 6, I/Y = 5, PV = 2,700
b. ​N = 5, I/Y = 6, PV = 2,700
c. ​N = 5, I/Y = 6, PV = -2,700
d. ​N = 5, I/Y = 6%, PV = -2,700
e. ​N = 5, I/Y = 6%, PV = 2,700