【单选题】

{{I}}Questions 18 to 20 are based on the following passage.At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage.{{/I}} Which statement is NOT true about gardens in the 18th century

A、They looked more natural.
B．They had curve paths.
C．They had their paths covered with flowers.
D．They became open.