30 ! read the dialogue and select the correct option. felipe: buenos días, juan. ¿a qué hora empieza la clase de biología? juan: empieza a las ocho y media. felipe: gracias, ¿y la clase de español? juan: es a las dos menos veinte. felipe: good morning, juan. what time does the biology class start? juan: it starts at eight thirty. felipe: you. what about the spanish class? juan: it's at minus twenty. based on the dialogue, his classes are at? 8: 15 and 2: 20 8: 40 and 12: 15 8: 20 and 3: 12 8: 30 and 1: 40