A grade $2$ Titanium tension test specimen has a diameter of $12$ mm and a gage length of $45$ mm$.$ In a test to fracture, the stress and strain data below were obtained. Determine: a$)$ the modulus of elasticity $($GPa$)$ b$)$ the proportional limit $($MPa$)$ c$)$ the yield strength $(\mathrm{.}20\%$ offset$)($MPa$)$ d$)$ the ultimate strength $($MPa$)$ e$)$ the fracture stress $($MPa$)$ f$)$ the true fracture stress if the final diameter of the specimen at the location of the fracture was $10\mathrm{.}44$ mm$.($MPa$).$ See figure