She finally attained the recognition she deserved. For her years of patient research. Correct the sentence fragment.
A.
She finally attained the recognition she deserved. Because of her years of patient research.
B.
F or her years of patient research. She finally attained the recognition she deserved.
C.
She finally attained the recognition she deserved because her years of patient research.
D.
She finally attained the recognition she deserved for her years of patient research.