Please include the used law at each step :)

Q 5. Determine whether the following arguments are valid: (a) pr 9 S TA ..svr (b) p (qr) (p 9) T- 9 ..-r (c) (p (q (PAq))) ::((PAq) (p -9)) (d) It is necessary to know how to program, in order to do well in computer science. If you do well in computer science, you have a guaranteed job. Not everyone in this class knows how to program. Therefore not everyone in this class will have a guaranteed job