Choose the right temperature for each step of the PCR cycle (the cycles have to be in the right order).
a. hybridization of primers - heating to 150°C:wtrand separation - holding at 95°C, DNA synthesis - cooling to 30°C
b. DNA synthesis - heating to 85°C, strand separation - cooling to 50°C: hybridization of primers - cooling to 20°C
c. hybridization of primers - cooling to 20°C: strand separation - heating to 70°C. DNA synthesis - heating to 100°C
d. strand separation - heating to 95°C; hybridization of primers - cooling to 54°C, DNA synthesis - heating to 72"C
e, DNA synthesis - heating to 50'C: strand separation - heating to 200°Chybridization of primers - cooling to 30°C