Which one of the following is active transport ?

Options

A. It is the movement of a substance against a diffusion gradient with the use of energy from respiration.
B. It is the movement of a substance against a diffusion gradient without the use of energy,
C. It is the movement of a substance against a diffusion gradient with the use of energy from photosynthesis.
D. It is the movement of a substance along a diffusion gradient with the use of energy from respiration.