Question: var a = [ 8 , 5 , 1 ] ; a [ a . length ] = 2 ; a [ a . length

var a=[8,5,1];
a[a.length]=2;
a[a.length]=9;
a[a.length]=6;
a[a.length]=3;
b=a.length;
The above Javascript code is run.
(a) What would be the value of a[4]?
(b) What would be the value of b?

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