Assume we have defined the following JavaScript object named personInfo.

const personInfo $=\{$

$$ name: 'Alex',

$$ gender: 'male',

$$ age: $\text{'}21\text{'}$

$\}$;

What is the output of this command: Object.keys$($personInfo$)$;

Group of answer choices

$[$name$,$gender$,$age$]$

$$name$,$gender$,$age$$

$[$name$,$ gender, age$]$

name, gender, age

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