Move out the floor

If $x$ is an integer, then $\lfloor x^2 \rfloor = x^2$ and $x\lfloor x\rfloor = x^2$ $\implies \lfloor x^2 \rfloor = x\lfloor x\rfloor$ . If $x=1.3$ , then $\lfloor 1.3^2 \rfloor = 1$ and $1.3 \lfloor 1.3 \rfloor = 1.3$ $\implies \lfloor x^2 \rfloor < x\lfloor x\rfloor$ . If $x=1.5$ , then $\lfloor 1.5^2 \rfloor = 2$ and $1.5 \lfloor 1.5 \rfloor = 1.5$ $\implies \lfloor x^2 \rfloor > x\lfloor x\rfloor$ .

Therefore the answer is "None of the other."