Question 4. Consider the statement: If compound X is boiling, then its temperature must be at least 150.! Assuming that this statement is true, determine whether the fol- lowing statements are definitely true or not necessarily true. For each answer, justify by using a definition or a truth table. (a) If the temperature of compound X is at least 150, then compound X is boiling (b) If the temperature of compound X is less than 150, then compound X is not boiling (c) Compound X will boil only if its temperature is at least 150. (d) If compound X is not boiling, then its temperature is less than 150. (e) A necessary condition for compound X to boil is that its temperature be at least 150% (f) A sufficient condition for compound X to boil is that its temperature be at least 150