Consider the following data Year 2012 2013 2014 2015 2016 Production (in tonnes) 15 20 25 30 35 The equation of straight line trend by method of least squares is :

$y = 5 + 25x$ $y = 10 + 15x$ $y = 25 + 5x$ $y = 15 + 5x$

$y = 25 + 5x$