Sentence 1: This has been supplemented by the spread of lucrative palm oil plantations, the discovery of rich new reserves of petroleum and natural gas off the north coast of Borneo and the east coast of the peninsula, and development of manufacturing and tourism industries.

Sentence 2: The discovery of new petroleum reserves has sparked civil unrest and a huge war.
OPTIONS:
[A]. yes
[B]. it is not possible to tell
[C]. no
Is this second sentence entailed by the first sentence?
[C].