Use radical notation to write the expression. Simplify if possible. $$ (-1)^{\frac{3}{4}} $$ Select the correct choice below and, if necessary, fill in the answer box within your choice. A. $$ (-1)^{\frac{3}{4}}=\square $$ B. The answer is not a real number. Bify your answer. Type an exact answer, using radicals as needed.)

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To evaluate the expression $$ (-1)^{\frac{3}{4}} $$, we can rewrite it using radical notation. The exponent $$ \frac{3}{4} $$ can be interpreted as follows:

$$
(-1)^{\frac{3}{4}} = \left((-1)^3\right)^{\frac{1}{4}}
$$

Now, let's calculate $$ (-1)^3 $$:

$$
(-1)^3 = -1
$$

Next, we need to find the fourth root of $$-1$$:

$$
\left(-1\right)^{\frac{1}{4}}
$$

The fourth root of $$-1$$ is not a real number because there is no real number that, when raised to the fourth power, gives $$-1$$.

Thus, we conclude that:

B. The answer is not a real number.
The answer is not a real number.

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