Consider a process consisting of five steps that must be performed in sequence with no waiting between steps

Consider a process consisting of five steps that must be performed in sequence with no waiting between steps. That is, perform task A first, followed by B, and so on in alphabetical order. The task requirements and resource allocations for these tasks are in the following table.
 
Station. Activity time for a single worker (min/unit) # of workers
A 10 2
B 6 1
C 16 3
D 8 1
E 5 1
 
The manager of this process would like to analyze the current configuration and identify opportunities for improvement. To help him, answer the following:

-What is the bottleneck? What is the capacity of this process? What is the flow time? What is the cycle time?
-What is the benefit of adding 1 more worker at the bottleneck station? And how much?
-Is there any benefit of shifting 1 worker @ A to D?