Read the statement and select the correct answer:
 
A)
Statement 1: A switch is the main source of electric current in a circuit.
Statement 2: A switch stops or allows the flow of current in a circuit.
 
B)
Statement 1: Electric cell converts chemical energy into electrical energy.
Statement 2: Electric cell converts electrical energy into chemical energy.
 
C)
Statement 1: When the key is opened, current flows through the circuit.
Statement 2: When the key is closed, current stops flowing through the circuit.