A Hockey Puck Travelling at Speed V on Essentially Frictionless

Multiple Choice

A hockey puck travelling at speed v on essentially frictionless ice collides elastically with one end of a straight stick lying flat on the ice. In this collision:

A) momentum is conserved.
B) angular momentum is conserved.
C) energy is conserved.
D) all of the above are conserved.
E) only momentum and angular momentum are conserved.