Multi-national corporations that have tried to compete in China have faced intense competition from local firms that have been able to infringe on their designs because of the limited patent laws.

A. that have been able to infringe on their designs
B. because the infringement of multi-national corporations’ designs was enabled
C. in that their designs were enabled to be infringed
D. because the designs were enabled and infringed
E. that have been able to infringe on the designs of these multi-national corporations



OA E

Source: e-GMAT