IMO A;
cor relative conjunction ; not only X but also Y .. and also the last Viceroy of India and the first Governor-General of Independent India is ll structure
option B ; only the first Governor-General of Independent India is wrong and not ll
option C ; the first one only Governor-General of Independent India again not ll
option d; co relative conjucntion error
option e; co relative conjucntion error
Admiral of the Fleet Louis Mountbatten, a decorated British naval officer and statesman, not only had a brilliant career in the military as he served as the Supreme Allied Commander, South East Asia Command during the Second World War but also had the distinctive stint of serving as the last Viceroy of India and the first Governor-General of Independent India.
A. but also had the distinctive stint of serving as the last Viceroy of India and the first Governor-General of Independent India
B. but also had the distinctive stint of serving as the last Viceroy of India and only the first Governor-General of Independent India
C. but also had the distinctive stint of serving as the last Viceroy of India and the first one only Governor-General of Independent India
D. he also had the distinctive stint of serving as the last Viceroy of India and the first Governor-General of Independent India
E. also had the distinctive stint of serving as the last Viceroy of India and only the first Governor-General of Independent India