Choose the most appropriate option based on the following statements:

i) Prepositions connect a noun with other parts of the sentence.
ii) Prepositions indicate time, place, direction, manner in which nouns are connected to the sentence.
iii) Prepositions are usually followed by nouns/pronouns or noun phrases.
Sentence: Rahul arrived at the railway station in the morning.

Which of the following options is NOT correct?