You will be given a definition of a task first, then some input of the task.
You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Paragraph: The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased.
 Question: If a herd of elephants is living happily in a forest and a group of humans then decides to move in, what happens to the elephants? 
 Choices: A)they decrease in number 
B)they increase in number
Output:
they decrease in number