Task 2 – Use expressions instead of statements
Refactor the code below to use expressions instead of statements:
string GetTowerDamageReport(IEnumerable<Tower> towers)
{
      int totalDamage = 0;
      foreach (Tower tower in towers)
      {
           if (tower.IsActive)
           {
                totalDamage += tower.Damage;
           }
      }
      return $"Active towers deal {totalDamage} total damage";
}