Let f(p) be the average number of days a house stays on the market before being sold for price p in $1,000s. which statement best describes the meaning of f(275)?

houses sell on the market for an average of $275,000 and stay on the market an average of 275 days before being sold.
houses sell for an average of $275,000.
f(275) indicates houses stay on the market an average of 275 days before being sold.
f(275) represents the average number of days houses stay on the market before being sold for $275,000.