What will the man and woman probably do

[A] An old lady took the couple’s suitcase by mistake.

B. An old lady stole the couple’s suitcase at the restaurant.

C. The old lady took their clothes by mistake.

D. The woman forgot to put clothes in their suitcase.

[A] are quite sure about why it’s getting hotter and hotter
B. declare that we humans are the cause why it’s getting hotter
C. have discussed the possible causes why it’s hotter
D. have claimed that changes in nature are the roots of hot days.