Consider the following code snippet : var a = []; a.unshift(1); a.unshift(22); a

Question

Consider the following code snippet :
var a = [];
a.unshift(1);
a.unshift(22);
a.shift();
a.unshift(3,[4,5]);
a.shift();
a.shift();
a.shift();
The final output for the shift() is

Options:

A . 1

B . [4,5]

C . [3,4,5]

D . Exception is thrown

Answer: Option A

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