Which of the following statements about plain$-$text r$$sum$$s is correct?

a$.$ A plain$-$text format is widely used for posting to online job boards and for applying by e$-$mail.

b$.$ A plain$-$text r$$sum$$ enables a job candidate to present their experiences, qualifications, and interests in video form.

c$.$ Plain$-$text r$$sum$$s are in high demand for electronic applications because recruiters and employers no longer ask candidates to send application materials by postal mail.

d$.$ Plain$-$text r$$sum$$s will look exactly like the original and cannot be altered without Adobe Acrobat and other conversion software.