You're developing a user profile and activity tracker for a website.

1. Declare a constant called DEFAULT_COUNTRY with the value "United States".

2. Declare a variable username and assign it "John Doe".

3. Declare a variable age and set it to 30.

4. Declare a variable called country and set it equal to DEFAULT_COUNTRY.

5. Declare a variable isSubscribed and set it to true.

6. Declare a variable loginCount and set it to 5.

7. Declare a variable loginReward and set it to 250.

8. In the next line, increment the loginCount using the ++ operator.

9. Increase loginReward by 50 using the += operator.

10. Declare a variable welcomeMessage that joins the following strings using the + operator in order:

    • username
    • " is "
    • age
    • " years old and has logged in "
    • loginCount
    • " times. The Login Reward balance is "
    • loginReward

11. Output welcomeMessage using console.log().