The correct answers are A) France in Vietnam and D) Britain in India.
The colonial holdings that Allied power nations continued to control after WW1 was France in Vietnam and Britain in India.
After World War 1, France kept colonies and protectorates in Southern Asia and Vietnam such as the French Indochinese Union, Conchinchina, Vietnam, Laos, Cambodia, Tonkin, and Paracel Islands.
The British kept India until the independence of India on June 15, 1947, when the country was divided into Pakistan and India.