Which word grammatically completes this sentence? tú bebes un para el desayuno. a) huevos b) limonada c) café d) leche

ok i dont know what b says but d is the only one that sounds some what like an aperitivo

yo nos habíamos enterado de que los precios de los tiquetes subieron.

btw its yo not ya, ya means already yo means me or in this case us.