Answer : Option A

Explanation :

There is an increase in foreign exchange reserves during the years 1992 - 1993, 1994 - 1995, 1996 - 1997, 1997 - 1998 as compared to previous year (as shown by bar-graph).

The percentage increase in reserves during these years compared to previous year are:

For 1992 - 1993 = [ \( \frac { (3720 - 2640) } { 2640 } \) x 100 ]% = 40.91%

For 1994- 1995 = [\( \frac { (3360-2520) } { 2520 } \) x 100 ]% = 33.3%

For  1996-1997 = [\(\frac { (4320-3120) } {3120 } \) x  100]% = 38.46%

For 1997 - 1998 = [ \(\frac { (5040-4320) } { 4320 } \) x 100]% = 16.67%

 Clearly, the percentage increase over previous year is highest for 1992 - 1993.