If the usual rule of calculation of time were applied for the extremes of Gujrat and Arunachal Pradesh, then approximately time: [CPO AC 2003] (a) at Gujarat would be ahead of that at Arunachal Pradesh by about 3 hours (b) at Gujarat would be ahead of that at Arunachal Pradesh by about 2 hours (c) at Arunachal Pradesh would be ahead of that at Gujarat by about 3 hours (d) at Arunachal Pradesh would be ahead of that at Gujarat by about 2 hours