Most cases of alimentary starvation are accompanied by development of evident edemata. What is the leading pathogenetic mechanism of edemata development in this case?

Answer options

1. Rise of hydrostatic pressure in the capillaries
2. Fall of oncotic pressure of blood plasma
3. Fall of hydrostatic pressure in the tissues
4. Rise of oncotic pressure in the intercellular fluid
5. Fall of osmotic pressure in the intercellular fluid