During prolonged fasting, in what sequence are the following

During prolonged fasting, in what sequence are the following organic compounds used up by the body?

1. First proteins, next lipids and lastly carbohydrates
2. First carbohydrates, next fats and lastly proteins
3. First fats, next carbohydrates and lastly proteins
4. First carbohydrates, next proteins and lastly lipids

Carbohydrates are the basic source of energy, proteins provide material for growth and development.