Question: Given the following UML, which statement below is not valid? A -X y +do_stuff .do_stuff20 -do_stuff30 B +9 obsto - ob stutt20 doc_stuff docstur20 O

Given the following UML, which statement below is not valid? A -X y +do_stuff .do_stuff20 -do_stuff30 B +9 obsto - ob stutt20 doc_stuff docstur20 O A myvar = new A(); B myvar = new B(); Omyvar = new C(); Amyvar = new B(); B myvar = new A(); Amyvar = new C()

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