Solve the Problem $S=100 x+900$ , Where $\mathrm{S}$ Represents the Number of Sales in Year

Multiple Choice

Solve the problem.
-Suppose the sales of a particular brand of appliance satisfy the relationship $S=100 x+900$ , where $\mathrm{S}$ represents the number of sales in year $\mathrm{x}$ , with $\mathrm{x}=0$ corresponding to 1982 . Find the number of sales in 1993.

A) 4000
B) 3900
C) 2000
D) 1900