Which of the following sentences is punctuated correctly?
O My son is a medical technician, my daughter, a postal worker, and my wife, an editor.
O My son: is a medical technician, my daughter: a postal worker, and my wife: an editor.
O My son is a medical technician; my daughter, a postal worker; and my wife, an editor.
O My son is a medical technician: my daughter, a postal worker, and my wife, an editor.