A single phase half wave controlled rectifier circuit has a free wheeling diode. The load is a combination of R and L. The firing angle is α. The period of conduction of SCR and free wheeling diode respectively are

• A. α < ωt < π and π < ωt < (2π + α)
• B. α < ωt < π and π < ωt < 2π
• C. α < ωt < (π + α) and (π + α) < ωt < 2π
• D. α < ωt < π and π < ωt < (2π - α)