THE MAIN PART I DO NOT UNDERSTAND IS HOW TO RANK THE OUTCOMES! Please Explain how to rank the outcomes along with the answers.. thanks so much

Five investment alternatives have the following returns and standard deviations of returns.

Alternatives	Returns: Expected Value			Standard Deviation
A		$ 1,350			$ 500
B		1,180			1,470
C		7,700			2,100
D		1,810			690
E		63,300			14,700

Calculate the coefficient of variation and rank the five alternatives from lowest risk to the highest risk by using the coefficient of variation. (Round your answers to 3 decimal places.)

Alternatives	Coefficient of Variation	Rank
A		(Click to select)ECADB
B		(Click to select)ECADB
C		(Click to select)ECADB
D		(Click to select)ECADB
E		(Click to select)ECADB