Which of the following sed commands will replace all in…

Which of the following sed commands will replace all instances of the string foo with the string foobar changing the file file1.txt in place?

Which of the following sed commands will replace all instances of the string foo with the string foobar changing the file file1.txt in place?

A.
sed ‘s/foo/foobar/g’ file1.txt

B.
sed ‘s/foo/foobar/g’ file1.txt > file1.txt

C.
sed ‘s/foo/foobar/g’ file1.txt | file1.txt

D.
sed -i ‘s/foo/foobar/g’ file1.txt

E.
sed -i ‘s/foo/foobar/g’ file1.txt > file1.txt



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