Read the source given below and answer the questions that follows:

In an English case Carlill v Carbolic Ball Co. (1893, IQB 256) the company was the manufacture of a medicine called smoke ball which was used for the treatment of influenza. The company believed that the medicine completely cured influenza. An advertisement was put up offering reward of £100 to anyone who got influenza again after using the smoke ball medicine continuously for fifteen days.

In the advertisement, it was also stated that £1.000 was deposited in a Bank, namely Alliance Bank for paying the reward if such situation arose. Seeing the advertisement Mrs. Carlil bought the sanoke ball medicine and used it as per directions provided. Mrs.Carlill got a fresh episode of influenza, Mrs Carlill sued the company for the reward of £100.

When the advertisement was made it meant to

Invitation to offer

The correct answer is Option (3) → Invitation to offer