B. Create Apex Sharing Reasons on the Loan object to identify the reason the Loan record was share.
C. Create a custom trigger on the Custom Team object that inserts or updates records in the Loan_share object.

A. Create a custom trigger on the Custom Team object that inserts or updates records in the Loan_share object.
C. Create Apex Sharing Reasons on the Loan object to identify the reason the Loan record was share.

Custom Team object requires programmatic creation of share record on the Custom Loan Object (Loan_share).
Neither criteria based sharing rule or owner based sharing rule can be created on the go, there is also limit in terms of how many of these rules can be created per object.

• C. Create a custom trigger on the Custom Team object that inserts or updates records in the Loan_share object. This option is accurate because a trigger can dynamically manage access to Loan records based on changes within the Custom Team object. If a Custom Team record is marked as “Primary,” the trigger can adjust the sharing settings accordingly, granting Read/Edit access as needed. This approach allows for real-time, programmable sharing adjustments that align with the specific business logic described.
• B. Create Apex Sharing Reasons on the Loan object to identify the reason the Loan record was shared. Although not directly mentioned as a correct answer in your statement, creating Apex Sharing Reasons on the Loan object is indeed a foundational step that enables option C (using a trigger for managed sharing) to be effective. Apex Sharing Reasons are necessary for defining why a record is shared in a particular way, which can then be leveraged by the custom trigger to apply the correct level of access (Read Only or Read/Edit) based on the “Primary” status in the Custom Team record....