Use radical notation to write the expression. Simplify if possible. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. $$ 8^{\frac{2}{3}}=\square $$ B. The answer is not a real number.

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Calculate or simplify the expression $$ 8^{\frac{2}{3}} $$.
Calculate the value by following steps:
- step0: Calculate:
  $$8^{\frac{2}{3}}$$
- step1: Rewrite in exponential form:
  $$\left(2^{3}ight)^{\frac{2}{3}}$$
- step2: Multiply the exponents:
  $$2^{3	imes \frac{2}{3}}$$
- step3: Multiply the exponents:
  $$2^{2}$$
- step4: Evaluate the power:
  $$4$$
The expression $$8^{\frac{2}{3}}$$ simplifies to $$4$$. Therefore, the correct choice is A. $$8^{\frac{2}{3}} = 4$$.
$$8^{\frac{2}{3}} = 4$$.

Use radical notation to write the expression. Simplify if possible. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. \( 8^{\frac{2}{3}}=\square \) B. The answer is not a real number.

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