Can someone break this down and help me understand?

Question

In a JS challenge with my fiance we both got this wrong.

The question was to determine the output of this code:

var a = 10,b = 20,c = 30;
if (c > b > a) {
console.log('1');
} else {
console.log('2');
}

We answered 1 and the answer was 2.
Can someone help me to understand why? Especially if it's something really easy we're missing.

Answer 1

Thanks for breaking it down, that helped.