If A, B and C together can finish a piece of work in 4 days. A alone in 36 days and B in 18 days, then C alone can do it in?	Choose the correct choice from the following options:
A) 1  B) 7  C) 8  D) 9  E) 6
C = 1/4 - 1/36 – 1/18 = 1/6 =&gt; 6 days'   Answer: 6
<result>E</result>
If A, B and C together can finish a piece of work in 4 days. A alone in 36 days and B in 18 days, then C alone can do it in?