4. (20 marks) Suppose a farming village in one of the North-eastern provinces of Thailand is facing severe long term draught problems. The rice farm in the village depends entirely on rain. There are three solution options being considered, (A) digging a large pond to hold water, (B) digging multiple underground wells to draw water from the aquifer, or (C) installing a pipe to pump water from a small river 500 meters away. Assess the possible impacts on the following aspects. (a)(5 marks) Identify different groups of villagers who will be affected by the draught (without the adaptation) and the ones who will be benefit from and may be worse off by each options (after the adaptation project is implemented). (b) (5 marks) Identify the possible important costs and benefits related to each options. (d)(2 marks) Which option should be chosen if the village can find sufficient budget and why? (e) (2 marks) Which option should be chosen if the budget is very limited, and why