Every month, Mary and Helen shared month rent of $1,000, by the same ratio from their monthly salary. In May, Helen's salary is $4,000. Mary switched her job in June and earned a different salary, while Helen's salary remained unchanged. What's the difference between the salary of Mary's old and new job?

(1) Helen paid 15% of her salary for the rent in May.

(2) Mary paid total $450 for the rent in June.

A. Statement (1) ALONE is sufficient but Statement (2) ALONE is not sufficient.

B. Statement (2) ALONE is sufficient but Statement (1) ALONE is not sufficient.

C. BOTH Statements TOGETHER are sufficient, but NEITHER Statement alone is sufficient.

D. Each Statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

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