Equation that has a radicand

A variable with a fraction exponent can be rewritten using a radical.
The equations would be A. radical equation
Answer:
Step-by-step explanation:
What do you call an equation with a radicand within a radicand? is the way I' reading the question. I didn't want to answer the question because I wasn't sure I was right. C and D are both the same and I don't think either is the answer.
A square root equation is the second best answer. It is a specific example of the actual answer.
The actual answer is A.
[tex]\sqrt[4]{x\frac{1}{3} + 6}[/tex] which is an example of a radicand within a radicand.