The bond dissociation energy of B-F in BF₃ is 646 kJ mol whereas that of C-F in CF₄ is 515 kJ mol ". The correct reason for higher B-F bond dissociation energy as compared to that of C-F is

Smaller size of B atom as compared to that of C atom.

Stronger o bond between Band F in BF₃ as compared to that between C and F in CF₄ .

Significant $p\pi -p\pi$ interaction between B and F in BF₃ whereas there is no possibility of such interaction between C and F in CF₄ .

Lower degree of $p\pi -p\pi$ interaction between B and F in BF₃ than that between C and F in CF4 .