Since quantum-mechanical theory is universal, it applies to all objects, regardless of size. Therefore, according to the de Broglie relation, a thrown baseball should also exhibit wave properties. Why don’t we observe such properties at the ballpark?

(a) Because of the baseball’s large mass, its de Broglie wavelength is minuscule and insignificant compared to the baseball’s size.

(b) Since baseballs do not have any charge, quantum mechanics does not apply to them.

(c) Quantum mechanics does not apply to baseballs.