Please help me with these two Unix Shell command problem. thank you!

Which statement(s) is true regarding the differences between awk and sed?

Which of the following regular expressions will best match text in order to find a valid user name?

Which statement(s) is true regarding the differences between awk and sed Select one O a. awk is typically used for data extraction and reporting, sed is used to edit streaming text data O b. awk processes records with delimited fields; sed works with unstructured text on a per-line basis O c. awk provides programming features like conditionals and loops while sed is more primitive in terms of programming constructs d. all of the above