Correct option is B
The Pound Sterling (GBP), the currency of the United Kingdom, is typically one of the costliest or most valued currencies in the world when compared to the Euro (EUR), US Dollar (USD), and other global currencies. Historically, the Pound has maintained a high exchange rate due to the UK's stable economy and financial systems.
As of 2022-2023, 1 Pound Sterling is often valued higher than both the Euro and the US Dollar. For example, 1 GBP is generally equal to more than 1.1 EUR or around 1.2-1.3 USD, making it the costliest currency among the options given. However, the cost of currencies can fluctuate based on economic conditions, interest rates, inflation, and other factors affecting global markets.