Question: PS2. (10 points) Assume the following JavaScript program: var x=4; var y=7; Function Sub1() { Document.write (x=+x+ ); Sub3(); 3. Function Sub2() { var

PS2. (10 points) Assume the following JavaScript program: var x=4; var y=7; Function Sub1() \{ Document.write ("x="+x+" " ); Sub3(); 3. Function Sub2() \{ var y; y=5; Sub1 (); 3 Function Sub3() \{ Document. write(" y="+y+" " ); \} main Sub2(); What are the values of x in Sub1 () and y in Sub3 () displayed when those functions are executed from main under dynamicscoping rules

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