We need to share the tasks. The burden on each member will be more tolerable.

A. Although the burden on each member will be more tolerable, we still need to share the tasks.

B. We need to share the tasks so the burden on each member will be more tolerable.

C. Unless we share the tasks, the burden on each member will be more tolerable.

D. It is essential to share the tasks, otherwise, the burden on each member will be more tolerable.