MCQmediumRules for 'a' before consonants and 'an' before vowels

In the sentence 'She bought some apples from a shop in the new market,' why is 'a' used before 'shop'?

Options

aBecause it's the first mention of the shop.
bBecause the shop is specific.
cBecause the shop is not particular or specific.check_circle
dBecause 'shop' starts with a consonant.

Key Points

Rule 2 states: "We also use a/an to refer to something unspecified, e.g. not particular or specific. ...the shop in the new market is not specific as there are many shops in the new market. So, article has been used before it."

Source

Class 6English Grammar and Composition Chapter 3: Articles: a, an, the Topic: Rules for 'a' before consonants and 'an' before vowels

Aligned to the NCTB national curriculum.