The question asks us to determine which state manufactured liquor at the lowest cost.
To calculate the cost of manufacturing liquor, we need to subtract the excise duty from the wholesale price. Based on the data provided in the graph:
- Tamil Nadu's excise duty is Rs. 25, and the total value (wholesale price) is Rs. 323.3. So, the cost of manufacturing per litre is \( 323.3 - 25 = 298.3 \).
- Andhra Pradesh's excise duty is Rs. 60, and the total value is Rs. 248. So, the cost of manufacturing per litre is \( 248 - 60 = 188 \).
- Maharashtra's excise duty is Rs. 52, and the total value is Rs. 240. So, the cost of manufacturing per litre is \( 240 - 52 = 188 \).
- Madhya Pradesh's excise duty is Rs. 39, and the total value is Rs. 214. So, the cost of manufacturing per litre is \( 214 - 39 = 175 \).
- Delhi's excise duty is Rs. 80, and the total value is Rs. 187.7. So, the cost of manufacturing per litre is \( 187.7 - 80 = 107.7 \).
Looking at these values, we can see that Delhi has the lowest value for the cost of manufacturing per litre. Therefore, the state with the lowest manufacturing cost is Delhi, which corresponds to option (C).