Question: java Consider the following method contract and client code: /** *Adds n to this. * *@updates this *@restores n @ ensures this = #this +

java java Consider the following method contract and client code: /** *Adds

Consider the following method contract and client code: /** *Adds n to this. * *@updates this *@restores n @ ensures this = #this + n */ public void add(NaturalNumber n) {...} NaturalNumber num = new NaturalNumber2(2); num.add(num); What is the value of num after the method call? num = 0 num = 2 num = 4 Cannot tell from the information provided

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