Question $3$

The common law rule on landlord's responsibilities for tenant security deposits is:

$$ a$.$ The landlord must hold all tenant security deposits in an escrow account.

b$.$ The landlord is a debtor to the tenant for the security deposit but is free to use the funds.

c$.$ The landlord must hold the funds and submit periodic records to the tenant on the deposit.

d$.$ The landlord must pay interest on the security deposit for the time it is held.