Maximum phase-lead of the compensator \(\mathrm{D}(s)=(0.5 s+1) /(0.05 s+1)\), is

(a) 52 deg at \(4 \mathrm{rad} / \mathrm{sec}\).

(b) \(52 \mathrm{deg}\) at \(10 \mathrm{rad} / \mathrm{sec}\).

(c) 55 deg at \(12 \mathrm{rad} / \mathrm{sec}\).

(d) None of the answers in \((a),(b)\) and \((c)\) is correct.