Which of the following is equivalent to $${4}^{\frac {1} {2}...

Question

Which of the following is equivalent to $${4}^{\frac {1} {2}}$$ ?

A

$$\sqrt {4}$$

B

$$\frac {4} {{4}^{2}}$$

C

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

D

$$\sqrt {16}$$

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