A particle is moving with constant momentum $\stackrel{\rightharpoonup }{\mathrm{P}}$along line $\mathrm{MN}$ as shown in figure. Line $\mathrm{AB}$ is parallel to $\mathrm{MN}$ .Mark the correct statements

 

 

 Angular momentum of particle about any point on line $\mathrm{MN}$ is zero.

For any reference point on line $\mathrm{AB}$ angular momentum vector of particle is constant.

For any reference point in $\mathrm{xy}-\mathrm{plane}$ in third quadrant angular momentum vector of the particle is in positive $\mathrm{z}$ direction

For any reference point in $\mathrm{xy}-\mathrm{plane}$ in third quadrant angular momentum vector of the particle is in negative $\mathrm{z}$ direction