Which of these rules should be followed while writing scientific name of an organisms?

(a)  The genus should be underlined when handwritten and should be italicized when printed.                                   

(b)  The species should be underlined when handwritten and should be italicized when printed.

(c)  First letter of species should be uppercase.            

(d)  First letter of genus should be uppercase.

• A

  a, b, d

• B

  a, b, c

• C

  b, c, d

• D

  a, c, d