What are the different modes of emission of laser beams?

I- The continuous mode emits photons without interruption, and is especially indicated in vascularized tissues to improve hemostasis.
II- In the pulsed mode, the laser beam is emitted intermittently in pulses, and is indicated in thin and delicate tissues.
III- The superpulsed mode differs from the pulsed mode in the amplitude of the energy peaks released and in the intervals between them.
IV- In the ultrapulsed or Q-switched mode, the emission of radiant power pulses is in milliseconds, achieving a rapid evaporation of tissue water and collagen contraction with minimal thermal tissue damage.
a) I and II are correct.
b) II and III are correct.
c) III and IV are correct.
d) I, II, III, and IV are correct.