function isDivBy3and5(n) { if (n % 3 == 0 && n % 5 == 0) { return true; } else { return false; } }

//Req. 2-E function fizz_buzz_and_fizzBuzz(n) { let result = ""; for (i = 1; i F) Optional Extra Credit (+3 pts). Write a function named fizz_buzz_and_fizzBuzz_XC that eliminates the trailing comma. Here's what the function should return: fizz_buzz_and_fizzBuzz (20) = "3 fizz, 5 buzz, 6 fizz, 9 fizz, 10 buzz, 12 fizz, 15 fizzBuzz, 18 fizz, 20 buzz" Hint: review the String methods we looked at in class