Identify products $A$ and $B$ in the following reaction:
$R-COOR' \xrightarrow[\text{dry ether}]{LiAlH_4} A + B$

• A
  $A = R-CH_2OH, B = R'-OH$
• B
  $A = R-OH, B = R'-H$
• C
  $A = R-COOH, B = R'-OH$
• D
  $A = R-CH_3, B = R'-COOH$