Explanation:

- In a contract of sale, the transfer of property in goods typically occurs based on the terms agreed upon by the buyer and the seller. The timing can vary.

- Option 1: At the end of contract

This is not typically the case in a simple agreement to sell, unless explicitly stated in the contract.

- Option 2: Immediately

This can occur if both parties agree that the transfer takes place as soon as the contract is executed.

- Option 3: In a future Date

The agreement can specify the transfer to occur on a future date after certain conditions are met.

- Option 4: Both b & c

The transfer might happen either immediately or at a future date depending on specific contractual terms agreed upon by the parties.