B.

The point can be

(1,1).

The point

(1,1)

means that a patient had 1 egg and 1 ounce of meat during a day. This is within a diet of eggs and meat.

C.

The point can be

(3,2).

The point

(3,2)

means that a patient had 3 eggs and 2 ounces of meat during a day. This is within a diet of eggs and meat.

D.

The point can be

(1,4).

The point

(1,4)

means that a patient had 1 egg and 4 ounces of meat during a day. This is within a diet of eggs and meat.