One \(\mathrm{J} / \mathrm{kg}\) is equal to

(a) \(1 \mathrm{kPa} \cdot \mathrm{m}^{3}\)

(b) \(1 \mathrm{kN} \cdot \mathrm{m} / \mathrm{kg}\)

(c) \(0.001 \mathrm{~kJ}\)

(d) \(1 \mathrm{~N} \cdot \mathrm{m}\)

(e) \(1 \mathrm{~m}^{2} / \mathrm{s}^{2}\)