Acquisition of a fractional land interest by an individual Indian or a tribe in trust status can be approved by the Secretary only if:
    
    
        
        (a) 
         The buyer already owns a fractional interest in the same parcel of land; or
     
    
        
        (b) 
         The interest being acquired by the buyer is in fee status; or
     
    
        
        (c) 
         The buyer offers to purchase the remaining undivided trust or restricted interests in the parcel at not less than their fair market value; or
     
    
        
        (d) 
         There is a specific law which grants to the particular buyer the right to purchase an undivided interest or interests in trust or restricted land without offering to purchase all of such interests; or
     
    
        
        (e) 
         The owner of a majority of the remaining trust or restricted interests in the parcel consent in writing to the acquisition by the buyer.