Photosynthesis converts energy $X$ into energy $Y$. What are $X$ and $Y$?

• A
  $X = \text{Chemical energy}, Y = \text{Light energy}$
• B
  $X = \text{Light energy}, Y = \text{Chemical energy}$
• C
  $X = \text{Heat energy}, Y = \text{Chemical energy}$
• D
  $X = \text{Light energy}, Y = \text{Heat energy}$