Read the formal email, and then answer the question.

subject: work schedule

dear ms. morrison,

i wanted to remind you that i am on vacation from march 14 to march 22, and my regular work hours will need to be assigned to other employees. let me know if you have any questions.

sincerely from serena

what error has the writer made in this formal email?

the body of the email is too short.
the purpose of the email is unclear.
there are formatting issues in the greeting.
there are formatting issues in the closing.