If a/b = 1/3, b/c = 2, c/d = 1/2, d/e = 3 and e/f = 1/8, then what is the value of abc/def ?  Select the correct option:  A) 27/4  B) 27/8  C) 3/4  D) 3/16  E) 1/4
Say a = 2. Then:   a/b = 1/3 --&gt; b = 6;   b/c = 2 --&gt; c = 3;   c/d = 1/2 --&gt; d = 6;   d/e = 3 --&gt; e = 2;   e/f = 1/8 --&gt; f = 16.   abc/def = (2*6*3)/(6*2*16) = 3/16.   Answer: 3/16.
<result>D</result>
If a/b = 1/3, b/c = 2, c/d = 1/2, d/e = 3 and e/f = 1/8, then what is the value of abc/def ?