Which of the animals is the most efficient feed converter?

The data for feed consumption and weight gain of our four farm animals labeled P, Q, R and S are shown below.

Use the data to answer this question correctly

P: 50kg feed consumed and 20kg weight gained.

Q: 90kg feed consumed and 30kg weight gained.

R: 100kg feed consumed and 25kg weight gained.

S: 150kg feed consumed and 30kg weight gained.

A. P
B. Q
C. R
D. S

Correct Answer:

Option A = P