Determine what phases are present and the phase compositions for the following alloy:

75 wt% Sn-25 wt% Pb at 175C (345F)

Group of answer choices

alpha phase: 87 wt % Pb, 13 wt% Sn; beta phase: 96 wt % sn, 4 wt% Pb

alpha phase: 80 wt % Sn, 20 wt% Pb; beta phase: 90 wt % Sn, 10 wt% Pb

alpha phase: 17 wt % Sn, 83 wt% Pb; beta phase: 98 wt % Sn, 2 wt% Pb

Liquid phase, 75 wt% Sn, 25 wt% Pb

100% solid phase, 75 wt% Sn, 25 wt% Pb