A 20-Kg Mass in the Xy Plane Is Moving in the the Negative

Multiple Choice

A 2.0-kg mass in the xy plane is moving in the negative x direction at 3.0 m/s along the line y = 5.0 m.As the mass passes across the y axis (i.e. ,passing the point (x,y = 0,5.0 m) ) ,what is its angular momentum with respect to the z axis?

A) 30 SI units
B) 150 SI units
C) −30 SI units
D) −150 SI units