Hi I need help to understand a question from DASSM

which four options from the coordinate activities process are considered useful in coordinating efforts across multiple teams (choose four)

A.) open space or unconferences where agendas are set real time by participants

B.) prove architecture early by working on architecture spikes or proof-of-concept user stories

C.) visualize work and workflow, perhaps leveraging Kanban boards or digital tools such as Jira

D.) architecture owners from each of the sub teams work together and guide the overall program

E.) plan releases with relative sizing or planning poker concepts

F.) program manager guides the overall program and coordinates efforts among the team of teams

Thanks