Maximum number of electrons in a subshell with $n=4$ and $l=3$ is

From the following sets of quantum numbers, which set is possible?

The maximum number of possible electrons in a subshell with $n=3$ and $l=2$ is

The uncertainty in position and velocity of a particle in motion are $1 \times 10^{-8} \mathrm{~m}$ and $6.627 \times 10^{-20} \mathrm{~m} / \mathrm{s}$, respectively. The mass of the particle is ( $h=6.627 \times 10^{-34} \mathrm{Js}$ )