You promised to help your classmate study for the math exam today, but you've just remembered you have a dentist appointment.
What message will you send?
A)Hi Alex! I'm waiting for you at the library. Did you forget about our study session?
B)Hey Alex! Can we study tomorrow instead? I totally forgot about my dentist appointment today. My apologies!
C)Hi Alex! I can't find my math book. Can you bring an extra copy when we meet?
D)Hey Alex! The library is closed today. Let's meet at my house instead.