What are the three options to connect 4 speakers, 2 of 60 RMS Watts and the other 2 of 80 RMS Watts, with a total of 280 RMS Watts? I- Use a 4-cha...

What are the three options to connect 4 speakers, 2 of 60 RMS Watts and the other 2 of 80 RMS Watts, with a total of 280 RMS Watts?

I- Use a 4-channel amplifier that produces an average of 80 RMS Watts x channel (the range would be between 50-120 RMS Watts x channel).
II- Use a 2-channel amplifier whose power is around 150 Watts x channel at 2 Ohms, for which the 4 speakers would be connected in parallel (2 per channel).
III- Use 2 2-channel amplifiers, 1 for each pair of speakers, connected in the same way as in the previous option.
IV- Use a 4-channel amplifier that produces an average of 70 RMS Watts x channel (the range would be between 50-90 RMS Watts x channel).
V- Use a 2-channel amplifier whose power is around 100 Watts x channel at 2 Ohms, for which the 4 speakers would be connected in parallel (2 per channel).
a) I, II and III are correct.
b) II, III and IV are correct.
c) I, II and V are correct.
d) Only III is correct.