Is it a joke?

Algebra Level 3

$x$ is a non-negative real number.Then:

$\huge ({x^x})^{({x^x})^{({x^x})^{.^{.^{.}}}}}$

Can also be written as:

$A) \huge x^{x^{x^{x^{.^{.^{.}}}}}}$ .

$B) \huge x^{x \times x ^ { x \times x ^{x \times x ^{.^{.}}}}}$

$C) \huge x^{x \times x \times x \times x \dots}$

$D) \huge x^{x^{x \times x^{x^{x \times x^{.^{.^{.}}}}}}}$

This question is part of the set All-Zebra