1. Unless otherwise decided by the competent authorities in accordance with Article 124(2), exposures fully and completely secured by mortgages on commercial immovable property shall be treated as follows:
(a) exposures or any part of an exposure fully and completely secured by mortgages on offices or other commercial premises may be assigned a risk weight of 50 %;
(b) exposures related to property leasing transactions concerning offices or other commercial premises under which the institution is the lessor and the tenant has an option to purchase may be assigned a risk weight of 50 % provided that the exposure of the institution is fully and completely secured by its ownership of the property.
2. Institutions shall consider an exposure or any part of an exposure as fully and completely secured for the purposes of paragraph 1 only if the following conditions are met:
(a) the value of the property shall not materially depend upon the credit quality of the borrower. Institutions may excl
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