Which statement about following up after sending a job application letter is true?

Multiple Choice

If your job letter was solicited, it is fine to follow up two or three times.

You can follow up daily to ask if email materials were received.

You can follow up multiple times after one week to ask if email materials were received.

If your job letter was prospecting, you must wait till the employer gets in touch with you.

You can follow up with the employer once if you hear nothing after two or three weeks.