Consider the lead-tin phase diagram: Dotion Se 60 0 6 100 4270 sod des Lud Socha 500 . 2120 200 B 18 C000 180 300 100 200 H 100 SP 0 Composition to 100 S Which phase(s) according to the diagram is present for the alloy below: 80 wt% Sn - 20 wt% Pb at 130 C OB O 0+ Liquid None