Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Dipole - dipole interactions are the only non-covalent interactions, resulting in hydrogen bond formation. Reason R : Fluorine is the most electronegative element and hydrogen bonds in HF are symmetrical. In the light of the above statements, choose the most appropriate answer from the options given below:
   
Option: 1 A is true but R is false
Option: 2 Both A and R are true and R is the correct explanation of A
Option: 3 Both A and R are true but R is NOT the correct explanation of A  
Option: 4 A is false but R is true

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