bash linux

Incorrect Question 12 0/1 pts Choose all that apply. From a file containing cat, that, theatre, setting (one word/line) - The regular expression(s) for matcing only: cat, that and theatre th "Wat" .at a+t O at at$ Incorrect Question 14 0/1 pts From a file containing cat, that, theatre, setting (one word/line) - The regular expression for matching only: that and theater at$ Ath O lat O att O at O att Incorrect Question 16 0/1 pts Shell variables are named and act as a ___ to assigned value command protector function pointer Incorrect Question 20 0/1 pts You can get input from user with this command: read capture get input