Which sentence uses parentheses correctly?
A)
The restaurant offered a senior discount to my grandmother (who is
seventy-eight years old).
B)
The restaurant offered a (senior discount) to my grandmother who is
seventy-eight years old.
C)
The restaurant offered a senior discount to my grandmother who is
(seventy-eight years old).
D)
The restaurant offered a senior discount (to my grandmother) who is
seventy-eight years old.