An athlete wants to supplement his daily diet with beef and plant proteins. The content of iron, calcium, and vitamins (in milligrams per spoonful) is given in the table

Iron Calcium Vitiamins
Beef p. 6. 3. 2
Plant p. 2. 3. 4

Wich graph shows the number of spoonfuls of beef protein and plant protein he needs to receive at least 18 mils of iron, 21 mils of calcium, and 16 mils of vitamins