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.
96. Act of taking one's life
  A.  Suicide
  B.  Homicide
  C.  Slaughter
  D.  Immolation
97. A person who rarely speaks the truth
  A.  Crook
  B.  Liar
  C.  Hypocrite
  D.  Scoundrel

98. A light sailing boat built especially for racing
  A.  Canoe
  B.  Yacht
  C.  Frigate
  D.  Dinghy
99. A thing liable to be easily broken
  A.  Ductile
  B.  Delicate
  C.  Brittle
  D.  Breakable
100. The branch of medical science which deals with the problems of the old
  A.  Oncology
  B.  Endocrinology
  C.  Obstetrics
  D.  Geriatrics