Array Compare

Consider the following variables. What gets logged?

var a = [1, 2, 3];
var b = [1, 2, 3];
var c = '1,2,3';

console.log(a == c);
console.log(b == c);
console.log(a == b);

true, true, false

true, true, true

true, false, false

false, false false