The basic doctrines of early Buddhism, which remain common to all Buddhism, include the four noble truths : existence is suffering (dukhka); suffering has a cause, namely craving and attachment (trishna); there is a cessation of suffering, which is nirvana; and there is a path to the cessation of suffering,
Tripitaka is a Religious text, so it would be A
This answer has relevant information about the Agkor Wat structure. This complex was built as a Hindi temple, then it was changed to the Buddhist religion. Also, Agkor was invaded by the Chams, a people who dwelled in Vietnam and Thailand. Thereafter, the Angkor Wat complex was abandoned by causes that are still under debate and then was rediscovered by Europeans.
Since late XIX century, Angkor has been gradually restored and now is one of the most significative monuments due to its historic, religious and architectural value.
the answer is A