How does ATP and NADPH connect light-dependent and light-independent reactions in photosynthesis?

How does ATP and NADPH connect light-dependent and light-independent reactions in photosynthesis?

A) ATP and NADPH are produced in both reactions
B) ATP and NADPH are used in both reactions
C) ATP and NADPH are produced in the light-dependent reaction and used in the light-independent reaction
D) ATP and NADPH are produced in the light-independent reaction and used in the light-dependent reaction