can you please solve b,c,d thanks

Considet the following five monthly refums a. Calculate the acithmotic average monthly retum over this period and express your answer as a percentage per month. b. Calculate the geometric average monthly retum over this period c. Caloulale the monthly variance over this period d. Calculate the monthly standard deviation over this period. a. The arithmetic average is 2.100%. (Round to two decimal placese) b. The geometro average : (Round to two decimal placel.)