A Biology Class Performs an Experiment Comparing the Quantity of Food

Multiple Choice

A biology class performs an experiment comparing the quantity of food consumed by a certain kind of moth with the quantity supplied.The model for the experimental data is given by $y = \frac { 1.572 x - 0.001 } { 6.367 x + 1 } , x > 0$
Where x is the quantity (in milligrams) of food supplied and y is the quantity (in milligrams) of food consumed.
At what level of consumption will the moth become satiated?

A) About 0.297 mg
B) About 0.347 mg
C) About 0.397 mg
D) About 0.247 mg
E) About 0.447 mg