Part B: AUG-GCG-AAC-UGU
Part C:It will change but the only one the will change is the A and U.
 
        
             
        
        
        
Answer:
Phosphodiester bonds:"It is a co-v-a-l-e-n-t bond in which a phosphate group joins adjacent carbons through ester linkages."
-  The 3’-end has a free hydroxyl group at the 3’-carbon of a sugar, and the 5’end has a free hydroxyl group or phosphate group at the 5’-carbon of a sugar.
Explanation:
Option- E: Is The best option to Choose from. 
 The phosphodiester bond links a 3' carbon to a 5' carbon in DNA and RNA.