One Word Substitution

DIRECTIONS : In each of the following questions, out of the four alternatives, choose the one which can be substituted for the given words/sentence.
46. A dramatic performance
  A.  Mascot
  B.  Mosque
  C.  Mask
  D.  Masque
47. Rooms with tiolet facilities
  A.  Suite
  B.  Deluxe
  C.  Lavatory
  D.  Cabin

48. A small shop that sells fashionable clothes, cosmetics etc.
  A.  Stall
  B.  Store
  C.  Booth
  D.  Boutique
49. A word no longer in use
  A.  Ancient
  B.  Primitive
  C.  Absolute
  D.  Obsolete
50. Murder of a king
  A.  Genocide
  B.  Homicide
  C.  Matricide
  D.  Regicide