Temperature (°C) 700 600 500 400 300 200 100 0 ° 5 (Mg) 8 20 20 a + L Composition (at % Pb) 10 42 40 L a+Mg2Pb 60 Composition (wt% Pb) 20 30 40 70 100 87 L Mg,Pb M 1200 1000 800 L + L Mg₂Pb 600 400 B B+ Mg2Pb 200 Mg2Pb 80 100 (Pb) Temperature (°F) Which of the following overall composition(s) is/are expected to produce the indicated microstructure upon cooling of the liquid alloy to room temperature? Select all that apply. 30 wt% Pb 42 wt% Pb 50 wt% Pb 67 wt% Pb 70 wt% Pb 81 wt% Pb 90 wt% Pb 97 wt% Pb 99 wt% Pb Mg2Pb Mg2Pb