Which details from the excerpt best indicate that the tomb is a frightening place? Check all that apply.

We saw Iqbal’s knees scrape on the stones on the ground,
The master stopped at the rusty iron door and pulled it open on rasping hinges.
We saw him disappear down the steps into the dark,
Then we heard the awful, terrifying sound that haunted our sleep
The sound echoed in the heavy heat of the courtyard.