My eldest sister started working as a freelance journalist as soon as she graduated from university.
A. No sooner had my eldest sister started working as a freelance journalist than she graduated from university.
B. Hardly had my eldest started working as a freelance journalist when she graduated from university.
C. No sooner had my eldest sister graduated from university than she started working as a freelance journalist.
D. After my eldest sister graduated from university, she had started working as a freelance journalist.
