I’m sure Luisa was very disappointed when she failed the exam. A. Luisa could have been very disappointed when she failed the exam. B. Luisa may be very disappointed when she failed the exam.

Luisa could have been very disappointed when she failed the exam.

Luisa may be very disappointed when she failed the exam.

Luisa might be very disappointed when she failed the exam.

Luisa must have been very disappointed when she failed the exam.