Basic JavaScript - Understanding Uninitialized Variables

JavaScript
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Tell us what’s happening:
Describe your issue in detail here.
I Cannot understand this , Why is it rejecting my code?

Your code so far

a = a + 1;
b = b + 5;
c = c + " String!";

// Only change code below this line
var a;
var b;
var c;
// Only change code above this line

a = a + 1;
b = b + 5;
c = c + " String!";

var a = 6;
var b = 15;
var c = “I am a String!”;

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0

Challenge: Basic JavaScript - Understanding Uninitialized Variables

Link to the challenge:

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Initialize the three variables a , b , and c with 5 , 10 , and "I am a" respectively so that they will not be undefined .

You should be initialising the variables at the top of the page, where the comments tell you to. Once variables are declared (with var, let or const), you shouldn’t re-declare them.
Also, you should be initialising the variables with the values described above.

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