Answer Happy

What do
the BEGIN and END keywords
signify in `awk`?
Group of answer choices:
They are keywords to the shell that specify the beginning and
end of an awk script.
They specify the beginning and end of control structures such as
if, while, etc.
They specify the first and last fields of a single line.
They are conditions that are triggered before the first line is
read, and after the last line is read.