In covering a certain distance,the speeds of $A$ and $B$ are in the ratio of $3:4$. $A$ takes $30 \text{ minutes}$ more than $B$ to reach the destination. The time taken by $A$ to reach the destination is (in $\text{hours}$):
- A$1$
- B$1\frac{1}{2}$
- C$2$
- D$2\frac{1}{2}$
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