Two wind farms supply electrical energy to consumers in different ways.
Wind farm 1 supplies energy directly to consumers and for every 
of energy extracted from the wind, 
is transferred to consumers as electrical energy.
Wind farm 2 stores electrical energy in batteries and then supplies energy from the batteries to the consumer. For every of energy extracted from the wind, 
is transferred to consumers as electrical energy.
Which statement about the two wind farms is correct?
Wind farm 1 is less reliable and less efficient than wind farm 2.
Wind farm 1 is less reliable but more efficient than wind farm 2.
Wind farm 1 is more reliable but less efficient than wind farm 2.
Wind farm 1 is more reliable and more efficient than wind farm 2.
