Convert 742.8 × 10^–12 s to each of the given units.
a. ks 
b. ns 
c. µs 
d. fs

• A. 7.428 × 10^–13 ks; b. 0.7428 ns; c. 7.428 × 10^–4 µs; d. 7.428 × 10⁵ fs
• B. 7.428 × 10^–7 ks; b. 0.7428 ns; c. 7.428 × 10^–2 µs; d. 7428 fs
• C. 7.428 × 10^–13 ks; b. 7.428 ns; c. 7.428 × 10^–4 µs; d. 7428 fs
• D. 7.428 × 10^–7 ks; b. 7.428 ns; c. 7.428 × 10^–2 µs; d. 7.428 × 10⁵ fs

Answer: (A)