It's wellknown that the world economic situation will get worse________. [ ]

A. not if dealt carefully with

B. if not carefully dealt with

C. if dealt not carefully with

D. not if carefully dealt with

钱泳在《履园丛话》中说：“俗语云：‘百年田地转三家’，言百年之内，兴废无常，必有转售其田至于三家也。今则不然，……十年之间，已易数主。”这种现象产生的根源是（ ）

A．政府“不抑兼并”

B．地主阶级掌握封建 * *

C．重农抑商政策

D．封建土地私有制