What Is the Main Difference Between the Batting Helmet and the Cycling

What is the main difference between the batting helmet and the cycling helmet?

A) A cycling helmet is made of low resilient material where as a batting helmet is made of a high resilient material.
B) A cycling helmet has a thin thermoplastic shell whereas a batting helmet has a thick fibreglass or polyethylene shell.
C) A cycling helmet has a liner constructed of polystyrene bead moulding where as a batting helmet has either high or low density foam liner.
D) All of the above.