Step 1: Read the required values from the chart.
From the bar chart, Voveran's 2006 sales are about Rs 23 crore, and Calpol's 2005 sales are about Rs 13 crore.
Step 2: Convert crores to lacs.
1 crore = 100 lacs. So Voveran 2006 sales = 23 x 100 = 2300 lacs. Calpol 2005 sales = 13 x 100 = 1300 lacs.
Step 3: Find the difference.
Difference = 2300 - 1300 = 1000 lacs.
Step 4: Match with options.
1000 lacs matches option 1. The other options (50, 100, 500 lacs) are far smaller than the actual gap between a roughly 23 crore figure and a roughly 13 crore figure, so they can be ruled out at a glance once both values are converted to the same unit.