Which of the following statements correctly defines one volt?
(a) 1V is the potential difference between two points when a force of 1N moves a charge of 1C between them.
(b) 1V is the potential difference between two points when 1C of charge produces 1J of work while moving between them.
(c) 1V is the potential difference between two points when 1J of work is done in moving 1C of charge between them.
(d) 1V is the potential difference between two points when 1J of power is supplied for 1s to move 1C of charge between them.