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

Given below are the steps involved in a plant breeding program. Identify the correct sequence of these steps.
$i$. Collection of variability
$ii$. Hybridization
$iii$. Evaluation and selection of parents
$iv$. Testing,release,and commercialization of new cultivars
$v$. Selection and testing of superior recombinants

The basis of the Green Revolution is:

In India,the earliest work in the field of plant breeding was initiated by

$A$ and $B$ were crossed to obtain sugarcane varieties having desirable qualities and the ability to grow in the sugarcane areas of North India. The most appropriate option for $A$ and $B$ is:

Explain: plant breeding.