Basic JavaScript - Understanding Uninitialized Variables

Tell us what’s happening:
Describe your issue in detail here.
I have a problem understanding initialized string values

Your code so far

// Only change code below this line
var a = 5;
var b = 10;
var c = :"I am a";
// 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) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Challenge: Basic JavaScript - Understanding Uninitialized Variables

Link to the challenge:

Hey, what exactly is giving you troubles?