Answer:
The answer is A. 19-23
Explanation:
The bid price is the price that the dealer is willing to buy and ask price is the price that the seller is willing to offer.
In the $/£ bid-ask quote of $1.2519-$1.2523, you would notice that the first three number(1.25) are the same for both the bid and ask quite. So it is a known fact that it is always the last two that is chosen.
The difference between bid and ask price is called spread.
Option B is wrong because it was written incorrectly.