What features of transistors made them superior for computers, compared with vacuum tubes? a. They were more expensive than tubes but lasted longer and were cooler in temperature. b. They didn’t last...

What features of transistors made them superior for computers, compared with vacuum tubes?

a. They were more expensive than tubes but lasted longer and were cooler in temperature.

b. They didn’t last as long as tubes but were less expensive.

c. They were cheaper and smaller than tubes.

d. They were cheaper, smaller, and cooler than tubes and lasted longer.