I am stuck Programming block

I have no clue what to do

My code so far


// Only change code below this line
var a = 6;
var b = 15;
var c = I am a String!;
// Only change code above this line

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

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Challenge: Understanding Uninitialized Variables

Link to the challenge:

follow the challenge instructions on what to inizialize the variables to:

Initialize the three variables a , b , and c with 5 , 10 , and "I am a"

and remember that strings need quotes around