Read the excerpt from "Music Gets Personal.”

Walking down the street, you still had to whistle, though. Old radios and record players were too big to carry. Radios had large tubes in them. Those tubes made the sound louder, but they were heavy. Parts of record players were made of iron. They were also too heavy to carry. Even if you could carry a record player, you couldn’t play it. Record players work only when they’re still.

Which details are included to explain the challenges of transporting music? Check all that apply.

People enjoyed whistling.
Radios were too big to carry.
Radios contained heavy tubes.
Some people could lift record players.
Record players had to remain still to work.