Following the Geneva Accords of 1954, Vietnam was
a. unified as the Republic of Vietnam, under the control of Ngo Dinh Diem.
b. divided at the 17th parallel into communist-controlled North and non-communist South.
c. unified as the Democratic Republic of Vietnam (DRV), under the control of Ho Chi Minh.
d. divided at the 17th parallel into communist-controlled South and non-communist North.