Return calculations. For each of the investments shown in the following table, calculate the rate of return earned over the period.

Investment	Cash flow during period	Beginning of period value	End of period value
A	- $800	$1,100	$100
B	15000	120,000	118,000
C	7,000	45,000	48,000
D	80	600	500
E	1,500	12,500	12,400