Select the most suitable option from the given alternatives to write the Subject for a Letter of Enquiry to M/s ABC Publishers to ask for the range of books available for sale.

To ask for a detailed brochure of books. To share details of M/s ABC Publishers. To sell the books available for sale. To purchase the available range of books.

To ask for a detailed brochure of books.

The correct answer is Option (1) - To ask for a detailed brochure of books.