Read the sentence.I spend about half my time, he spends two thirds of his time, and she spends a quarter, or maybe a third, of her time on research.
A
I spend about-half my time, he spends two thirds of his time, and she spends a quarter, or maybe a third, of her time on research.B
I spend about half my time, he spends two-thirds of his time, and she spends a quarter, or maybe a third, of her time on research.C
I spend about half my time, he spends two thirds of his time, and she spends a quarter, or maybe a-third, of her time on research.D
I spend about half my time, he spends two thirds of his time, and she spends a quarter, or maybe-a-third, of her time on research.