What is the purpose of this sentence? Do I know you?

A.) to ask a question
B.) to make a statement
C.) to give an order
D.) to express feeling

A. to ask a question

They are asking a question, if they know them.

A

Explanation:

its saying do i know you as in a question you can also tell if it is a question or not because of the question mark at the end

sonnet 130 follows the typical rhyme scheme of the form abab cdcd efef gg and is composed in iambic pentameter,a type of a poetic metre based on five pairs of metrically weak/strong syllabic positions.the first line exemplifies iambic pentameter.

just say it's your friend did it and you had no idea?