Which of the following statement(s) is(are) true for ideal plug flow reactor? a) All the elements of the fluid that enter the system (or control volume) at a given time will pass through the system at the different velocity b) All the elements of the fluid that enter the system (or control volume) at a given time will remain in the system the same amount of time c) All the elements of the fluid that enter the system (or control volume) at a given time will exit the system at the same time d) Longitudinal mixing occurs between adjacent fluid elements e) Plug flow occurs in long, narrow basins with length-to-width (L:W) ratios of 50:1 or less. f) Examples include water flowing through a pipe or hose