Or the Data $(0,1000),(1,1500),(2,2000),(3,2500),(4,3000),(5,3500)$ , Where the First Number in Parenthesis Is

Multiple Choice

or the data $(0,1000) ,(1,1500) ,(2,2000) ,(3,2500) ,(4,3000) ,(5,3500)$ , where the first number in parenthesis is $t$ and the second number is the actual demand, if we fit a trend line of the form $y t=a+b t$ , the value of a obtained using the appropriate formulae is

A) 0
B) 500
C) 1000
D) 1500
E) 2000