Basic JavaScript - Understanding Uninitialized Variables

Tell us what’s happening:
Describe your issue in detail here.
I’m not understanding what I’m doing wrong I’m super confused on the c part

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!";

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Challenge: Basic JavaScript - Understanding Uninitialized Variables

Link to the challenge:

Watch out for unwarranted spaces.