Which of the following statements about electronic cover letters is true?a.Sending an e-mail is a less formal type of communication, so electronic cover letters do not need to follow the business format.b.Cover letters that are sent electronically should always have a brief but informative subject line which catches the reader’s eye.c.Cover letters should always be sent as attachments, unless it is specifically requested that the letter be included in the body of the e-mail.d.If an employer asks that only a cover letter and résumé be submitted, it is a good idea to attach letters of recommendation also to appear professional.