The correct answer is: Only assumption II is implicit.
The statement does not provide any information about the percentage of people consuming liquor in rural areas. It is possible that the percentage of people consuming liquor is higher in rural areas, but it is also possible that the percentage is the same or even lower than in urban areas. Therefore, assumption I is not implicit.
The statement does provide information about the fact that cases of food poisoning due to consumption of liquor are increasing in rural areas. This suggests that there may be a problem with the quality of liquor being sold in rural areas. It is possible that there are many unauthorized spurious liquor shops in rural areas, which are selling liquor that is not properly regulated or inspected. This could lead to people getting sick from drinking the liquor. Therefore, assumption II is implicit.
Assumption I is not supported by the statement, while assumption II is supported by the statement. Therefore, the correct answer is: Only assumption II is implicit.