Melissa Receives an Email That Comes from a Random Email

Melissa receives an email that comes from a random email address. She has many friends that use their online "handles" like [e-mail] for instance so she isn't really surprised by that. There is an attachment on the email called "Iloveyou.txt" which looks intriguing even if she doesn't remember knowing this person.
What is about to happen?

A) She will open the attachment and it will be from a long lost partner she has been hoping to get back in touch with for years.
B) The file is really named "iloveyou.txt.vbs" and is a well known classic trick to spread a macro virus
C) Her boss sent her this as a practical joke to see if she would open it, but its harmless
D) A Windows will pop open to a command shell and a lot of noise will come from her speakers. The shell will say "Will you marry me?" the email was from her finacee.