Which sentence uses brackets correctly?
A. "It was only once the cake was in the oven that Horatio
remembered what he had forgotten (Horatio is often forgetful)."
B. "My mother said that she wanted to drive there [our grandmother's
house]
C. "Valerie stared at the stack of books in front of her and sighed
(she knew it would be a long night]."
D. "My brother told me that the cake I made for his birthday was
delicious [but I think he was just being nice]