pls answer my last one to Rodney sold 45,612 copies of his book and Beth sold 45,612 x one half copies of her book. Which statement compares the numbers of book copies sold?

a Beth sold half the number of book copies that Rodney sold.
b Rodney sold half the number of book copies that Beth sold.
c Beth sold twice the number of book copies that Rodney sold.
d Rodney sold the same number of book copies that Beth sold.