Which of the following is not a main step of plant breeding?

Select the correct option for $Saccharum$ $barberi$ and $Saccharum$ $officinarum$.
$I -$ Low sugar content
$II -$ High sugar content
$III -$ Low yield
$IV -$ High yield
$V -$ Grown in North India
$VI -$ Grown in South India
$Saccharum$ $barberi$ $\quad$ $Saccharum$ $officinarum$

Select the appropriate option for evaluation and selection of parents in plant breeding.

Assertion $A :$ Improved varieties with genetic variations can be obtained through plant breeding.
Reason $R :$ The main objectives of plant breeding are the same as those of animal breeding.
Which option is correct for Assertion $A$ and Reason $R$?

Which is the oldest method of plant breeding for crop improvement?

Since the beginning of human civilization,plant breeding has been practiced in a traditional manner for thousands of years. Written evidence of this practice is still available from ...... years ago.