A container has 3L of pure wine. 1L from the container is taken out and 2L water is added.The process is repeated several times. After 19 such operations, qty of wine in mixture is	Choose one
A) 2/7 L
B) 3/7 L
C) 6/19L
D) 7/23L
E) 8/25L
First operation: 3L-1L=23 -1= 
<gadget id="calculator">3 -1</gadget>
<output>2</output>
2=6/3L of wine left, total 4L;   #2: 6/3L-(6/3)/4=6/3-6/12=18/12=6/4L of wine left, total 5L;   #3: 6/4L-(6/4)/5=6/4-6/20=24/20=6/5L, total 6L;   #4: 6/5L-(6/5)/6=6/5-6/30=30/30=6/6L, total 7L;   ....   2/7 Lt this point it's already possible to see the pattern: x=6/(n+2)   n=19 --&gt; x=6/(19+2)=6/21=2/7L   2/7 Lnswer: 2/7 L.
<result>A</result>
A container has 3L of pure wine. 1L from the container is taken out and 2L water is added.The process is repeated several times. After 19 such operations, qty of wine in mixture is