A researcher wanted to predict possible changes on the height of the plants (mm) by tracking down the measurement of organic fertilizer (in lbs) he used historically. After running linear regression, he got 125.80 for intercept and 171.50 for fertilizer coefficient. Using these results, what would be the estimated height of the plant if he used 2 lbs of organic fertilizer?

the choices are

a. 486.60 mm

b. 468.80 mm

c. 478.60 mm

d. 468.60 mm