Select the correct option on the basis of the following sentences:
$I.$ Biological names are generally in French.
$II.$ The first word in a biological name represents the genus.
$III.$ The second word in a biological name is written in a capital letter.
$IV.$ When the scientific name is handwritten,it should be underlined.

• A
  Only $I$
• B
  $I$ and $II$
• C
  $II, III$,and $IV$
• D
  $II$ and $IV$