Which of the following is a wrong statement? O Variable is a container that store an value variable can be used before giving its value O Variable can change the value O Variable can have different types of values Consider the value of i=16 & j=16 and give the output for the below python program while i=b: X=X+1 y=y-1 Z=X+y print(z) Write the output of the below given program import array as arr y=arr.array("i",[20,30,50,60]) y.extend([40,90,10]) y.remove(50) print(y[-1],y[3])