In the summer of $2012$, in New Delhi, the mean temperature of Monday to Wednesday was $41^\circ\text{C}$ and of Tuesday to Thursday was $43^\circ\text{C}$. If the temperature on Thursday was $15$% higher than that of Monday, then the temperature in $^\circ\text{C}$ on Thursday was
- $40$
- $43$
- $46$
- $49$