The gyroscopic acceleration of a disc rotating at speed \(w\) and uniform acceleration is

(a) \(\mathrm{d} \omega / \mathrm{d} t\)

(b) \(\omega \mathrm{d} \theta / \mathrm{d} t\)

(c) \(r \omega^{2}\)

(d) \(r \mathrm{~d} \omega / \mathrm{d} t\)