A plot of $640\text{sq ft}$ is available at the rate of $\text{Rs. }4,600$ per $\text{sq ft}$. If $30\%$ of the total cost of the plot is to be paid for booking the plot, how much is the booking amount?

1. A
   Rs. 9,38,100
2. B
   Rs. 8,83,200
3. C
   Rs. 9,83,200
4. D
   Rs. 8,38,100