Directions: Read the sentence given below and identify the two parts of the sentence that contain a grammatical/contextual error. If none of the parts of the sentence has an error, select "No error" as your answer. 

Digital infrastructure, layered with machine intelligence (A) and intricate protocols, remains largely misunderstood, (B) creating vulnerabilities that goes unnoticed (C) in the face of a growing threat of cognitive warfare. (D)