What is true of the price of aluminum compared to cast iron? They are both the same price O Aluminum is much more expensive O Cast iron is much more expensive (A) Liquid (A) (B) -TL Liquidus JL+S Temperature Ts Solid (B) Solidus Alloying element (%) Pure metal Looking at the solidification graphic shown above, which of the solidification signatures (A) or (B) would lead to more microsegregation in a slowly cooled casting? OA O B