please show all of your work and i will thumbs up!

but 1. Two banks in NY post then following quotes for the British pound: Bank A Bank B Bid Ask Bid Ask $1.3620/ $1.3840/ $1.3260/ $1.3440/ a. How can you tell right away if there is a locational arbitrage opportunity in these prices? (Don't explain how you will exploit it; just state whether it exists and how you can tell). b. Now, demonstrate your answer to part a above by narrating the trades you would execute and the arbitrage profits you would make by using a nominal $25 million