Question: When did the British and Russian empires begin encroaching on Tibet?
Answer: The British Empire was encroaching from northern India into the Himalayas, the Emirate of Afghanistan and the Russian Empire were expanding into Central Asia and each power became suspicious of the others' intentions in Tibet.
A single-select problem: Is the question answered in a satisfactory fashion?

Select from:
A). yes;
B). no;
B).