A reduction of $20\%$ in the price of rice enables a person to buy $3.5 \text{ kg}$ more rice for $\text{Rs. } 770$. What is the original price of rice per kg?
Options:
- A: $\text{Rs. } 44$
- B: $\text{Rs. } 50$
- C: $\text{Rs. } 55$
- D: $\text{Rs. } 60$
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