3. Consider the following schedule S. [CO3,C4, Mark: 10] Answer the following questions. a) Is the given schedule S conflict-serializable? Justify your answer. If yes, find the serial schedule to which it is conflict equivalent with? b) Is the given schedule S recoverable? Justify your answer. c) Is the given schedule S cascadeless? Justify your answer. If no, rewrite the schedule without changing their precedence graph so that it becomes cascadelss schedule