4. State whether you would want to use a fractional or simple distillation for each of the cases below. Assume the mixture contains a 1:3 mixture of two components A and B, where component A is the lower boiling point component. Briefly explain each of your answers. ( 2 points) (a) You need a really pure sample of component A. (b) You just need each component to be at least 85% pure and want the MAXIMUM amount of distillate out