Getting a physical examination at a physician's office involves a series of steps. The table below lists these activities and their average times. The activities can occur in any order, but the doctor's consultation must be last. Three nurses are assigned to perform activities 1, 2, and 4.

Activity	Average Time, Min.
1. Blood pressure, wt., temp	6
2. Medical history	20
3. Doctor's checkup	30
4. Lab work	10
5. Doctor's consultation	12

What is the maximum number of patients who can be seen per hour (without reallocation of activities)?

a) 3 per hour

b) 2 per hour

c) 3.33 per hour

d) 6 per hour

e) 5 per hour