3. For a fixed proportion of each phase in a two-phase specimen, how does phase boundary area vary with the size of the second phase particles? Imagine you have 75% of phase A and 25% of phase B: a. what would be the difference in phase boundary area if phase B were in 1 large particle compared to many small particles? b. what would be the difference in macroscopic physical properties if phase B were in 1 large particle compared to many small particles