Read the dialogue and answer the question.
Aslı: I'm planning a picnic for Saturday. Would you like to join?
Burak: I'd love to, but I usually visit my grandparents on Saturdays.
Aslı: What about Sunday?
Burak: Sunday is fine. I always finish my chores in the morning. I'm free in the afternoon.
Aslı: Great! Let's meet at 1 PM at the city park.
According to the dialogue, why can't Burak go to the picnic on Saturday?
A)He has to do his chores.
B)He usually visits his grandparents.
C)He doesn't like picnics.
D)He is busy in the afternoon.