Which of the following commands will reduce all consecutive spaces down to a single space?

Which of the following commands will reduce all consecutive spaces down to a single space?
A . tr ‘s’ ‘ ‘ < a.txt > b.txt
B. tr -c ‘ ‘ < a.txt > b.txt
C. tr -d ‘ ‘ < a.txt > b.txt
D. tr -r ‘ ‘ ‘
‘ < a.txt > b.txt
E. tr -s ‘ ‘< a.txt > b.txt

View Answer

Answer: E