Tokyo, June 11 (BridgeNews) - The yen was offered on weak Japan GDP data released Monday which showed a 0.2% drop in January-March from the previous quarter, the upward momentum of the dollar/yen was slowed by option-related selling pressures near the 121.30 area. Sterling gained ground on a report that U.K. Chancellor of Exchequer, Gordon Brown, was skeptical about the early U.K. entry into the euro. Euro/dollar was sandwiched by euro buying against yen and euro selling against sterling