In the following chart, the price of logs is shown in per cubic metre and that of Plywood and Saw Timber in per tones.  Study the chart and answer the following questions.

1. Which product shows the maximum percentage increase in price over the period?
(A) Saw timber
(B) Plywood
(C) Log
(D) None of the above



2. What is the maximum percentage increase in price per cubic metre of log ?
(A) 6
(B) 12
(C) 18
(D) 20



3. In  which  year  the  prices  of  two products  increased  and  that  of  the third increased ?
(A) 2000
(B) 2002
(C) 2003
(D) 2006