The correct answer is: D. Any currency
A deductible is the amount of money that you have to pay out of pocket before your insurance company will start to pay for a covered medical expense. Deductibles can be set in any currency, and they can vary depending on the type of insurance you have and the level of coverage you choose.
For example, if you have a health insurance policy with a $1,000 deductible, you will have to pay the first $1,000 of any medical expenses out of pocket before your insurance company will start to pay for them. Once you have paid the $1,000 deductible, your insurance company will usually pay for 80% of the remaining medical expenses, up to a certain limit.
It is important to understand your deductible and how it works so that you can plan for your medical expenses. You should also make sure that you have enough coverage to meet your needs. If you have a high deductible, you may want to consider saving up money in an emergency fund so that you can cover your medical expenses out of pocket if you need to.