Please help me answer the correct solution to this problem i gave it several tries but got wrong..

3. Efficiency in the production possibilities model Suppose South Africa produces only two goods: wheat and tablets. The following graph shows South Africa's current production possibilities frontier, along with six output combinations represented by black points (plus symbols) labeled A to F. 100 BO 60, 70 PPF 30 TABLETS (Millions) 40 X C 20 A D 20 40 60 BO 100 WHEAT (Millions of bushels)20 D 20 40 60 80 100 WHEAT (Millions of bushels) Complete the following table by indicating whether each point represents output combinations that are inefficient, efficient, or unattainable. Check all that apply. Point Inefficient Efficient Unattainable A D B C O D E F Grade It Now Save & Continue Continue without saving