GMAT Problem Solving (PS) | Re: The total expenses of organizing a party has a fixed expense of $250

The total expenses of organizing a party has a fixed expense of $250 as the rent of the place where the party is to be organized and a variable expense depending on the number of guests attending the party. For 10 guests the total expense was estimated to be $650. What is the estimated total expense for 20 guests?

(A) $800
(B) $900
(C) $1050
(D) $1250
(E) $1300