Parallel and series

 

Use the circuit above to answer the following questions.
 
a)
Which bulbs are in parallel? _________________________
 
b)
Which bulbs are in series? _________________________
 
c)
If all the bulbs have the same resistance, which bulbs would have the same current flowing through them?
 

 
 
d) Draw a switch in the circuit above so that bulb A can be turned off when bulb C and bulb B are still going.