For this case we must complete the following sentence:
________ two twenty.
By definition, when the time is asked in the present tense, the third person of the verb "ser" is used. That is to say:
¿Qué hora es?
The answer would be given, for example, by: "Es la una", because it's a singular number. It would not be correct to say: "Son la una"
When it is any other time than 1:00 pm, the third plural person of the verb "ser" is used, that is:
"Son las dos, son las cuatro..."
Thus, the correct option is option B.
ANswer:
Son las dos y veinte
