Atwo-phase metal alloy is known to be composed of α and β phases that have mass fractions of 0.64 and 0.36, respectively. using the following room-temperature electrical resistivity and density data, calculate the electrical resistivity of this alloy at room temperature. density (g/cm 8.26 phase resistivity(2m) 1.9 x10-8 5.6 x10-7 : 8.60 (a) 2.09 × 10-7 ω-m (b) 2.14 x 10-7 ω-m (c) 3.70 × 10-7 ω-m (d) 5.90 x 10-7 ω-m