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: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.
 Question: Jan had a very low heart rate, but was perfectly healthy, indicating that her heart expels blood in amounts that are 
 Choices: A)greater 
B)lesser
Output:
greater