Choose the correct sentence which is built from the words and phrases given:
Because / snowstorm / only / five / student / come / class / teacher / therefore / cancel / class //.
Because of the snowstorm only five students came to class. The teacher, therefore, cancelled the class.
Because of a snowstorm only five students have come to the class, teacher therefore has cancelled class.
Because the snowstorm only five students came to class the teacher, therefore, had to cancel the class.
Because a snowstorm only five students came to the class; teacher, therefore, cancelled class.
Because of the snowstorm only five students came to class. The teacher, therefore, cancelled the class.