.A project manager assigned team members to work in pairs on a large amount of technical reports. At times, the project manager noticed that important information was not shared properly among the team. This has caused delivery delays and, ultimately, the failure to complete the project.What is the root cause of this issue?
选项：

A: Lack of team member training on documentation planning
B: Improper assignment of tasks to team member pairings
C: Incorrect communication techniques applied during implementation
D: Team cohesiveness was lost because team members worked in pairs