Here is the code run with Object.freeze(PI):

```
function freezeObj() {
"use strict";
const MATH_CONSTANTS = {
PI: 3.14
};
// change code below this line
Object.freeze(PI);
// change code above this line
try {
MATH_CONSTANTS.PI = 99;
} catch( ex ) {
console.log(ex);
}
return MATH_CONSTANTS.PI;
}
const PI = freezeObj();
```

Error is PI equals 3.14

Here is the code run with Object.freeze(MATH_CONSTANTS)

```
"use strict";
const MATH_CONSTANTS = {
PI: 3.14
};
// change code below this line
Object.freeze(MATH_CONSTANTS);
// change code above this line
try {
MATH_CONSTANTS.PI = 99;
} catch( ex ) {
console.log(ex);
}
return MATH_CONSTANTS.PI;
}
const PI = freezeObj();
```

Error is TypeError: Cannot assign to read only property ‘PI’ of object ‘#<Object>’

Here are the test params:

Thx for the help.