Taxonomic keys are generally __A__ and are based on __B__ characters.

Find out the correct matches from the following pairs and select the option accordingly:

$\left(\mathrm{a}\right)$Poales—order

$\left(\mathrm{b}\right)$Hominidae—class

$\left(\mathrm{c}\right)$ Arthropoda—phylum

$\left(\mathrm{d}\right)$ Diptera—Family

$\left(\mathrm{e}\right)$ Angiospermae—Division

Modern taxonomy is based on

(a) External and internal features

(b) Cell structure

(c) Developmental process and ecological information of organisms

Select the correct option: