According to Heisenberg's uncertainty principle:

The correct option is D $\Delta x.\Delta p\ge \frac{h}{4\pi }$
Heisenberg’s uncertainty principle states that it is impossible to measure or calculate exactly, both the position and the momentum of an object simultaneously.
$\Delta x.\Delta p\ge \frac{h}{4\pi }$
Where $\Delta x$ is uncertainty in position and $\Delta p$ is uncertainty in momentum.