Based on the infomation, Option c) is correct. Julian will pay less than Darius.
Since Darius has already met his deductible for the year ($5,000 in medical bills), he will only be responsible for the coinsurance. For a $1,000 hospital visit, Darius will pay 20% * $1,000 = $200.
Julian, however, has not met his deductible yet. So, he will be responsible for the deductible amount ($1,000) plus the coinsurance on the remaining amount. For the remaining $1,000 - $1,000 = $0, Julian will pay 10% * $0 = $0.
Therefore, Julian will pay a total of $1,000 + $0 = $1,000, while Darius will pay $200. Julian will pay less than Darius.