Part II. Specifications, Subtyping and the LSP 1. (10pts, 2pts each) True/false questions. a) (TRUE/FALSE) When a client calls a method without meeting the preconditions, the method must throw an exception b) (TRUE/FALSE) If S1 is a stronger specification than S2, then any implementation that satisfies S1 must also satisfy S2. c) (TRUE/FALSE) A stronger specification is harder to implement than a weaker one. d) (TRUE/FALSE) A weaker specification is easier to use than a stronger one. e) (TRUE/FALSE) Adding more preconditions to a method sometimes strengthens and sometimes weakens the specification