law: Indian Trusts Act, 1882 
  17. Trustee to be impartial 
  Where there are more beneficiaries than one, the trustee is
  
  bound to be impartial, and must not execute the trust for the advantage of one
  
  at the expense of another.
  Where the trustee has a discretionary power, nothing in this
  
  section shall be deemed to authorize the court to control the exercise
  
  reasonably and in good faith of such discretion.
  Illustration 
  A, a trustee for B, C and D, is empowered to choose between
  
  several specified modes of investing the trust-property. A in good faith
  
  chooses one of these modes. The court will not interfere, although the result
  
  of the choice may be to vary the relative rights of B, C and D.