Which of the following count the number of words in a file ABC.txt$?$

Question $4$Select one or more:

cat abc.txt $|$ wc $-$w

wc $-$w abc.txt

wc $-$l abc.txt

cat abc.txt $|$ wc $-$l

wc $-$w $<$ abc.txt

cat wc $-$w abc.txt