$$3\frac{3}{4} \div 2\frac{1}{2} \times 4\frac{1}{2} + 1\frac{3}{4}=?$$

A

$$7\frac{1}{2}$$

B

$$4\frac{1}{4}$$

C

$$3\frac{3}{4}$$

D

$$8\frac{1}{2}$$

E

None of these