My mother said, "I will have cooked the food by then thus I can join you all for the movie."

A

My mother said that she would have cooked the food by then so she can join us for the movie.

B

My mother said that she will have cooked the food by then so she could join us for the movie.

C

My mother said that she would have cooked the food by then so she could join us for the movie.

D

My mother said that she will have cooked the food by then so she can join us for the movie.