Which of the following are correct for numerical taxonomy?

i   Based on all observable characteristics.

ii  Uses chemical constituents of the plant to resolved confusion.

iii  Based on cytological information like chromosome number, structure and behavior.

iv Numbers and codes assigned to a few characters.

v  At the same time, hundreds of characters can be considered.

vi Carried out using computers.

• A

  i, v, vi

• B

  iii, iv, v

• C

  i, iv, v, vi

• D

  ii, iii, v, vi