AssertionDuring covalent bonding the electronegativity difference of two atoms is less than $1.7$ReasonCovalent bond is formed by sharing of electrons between atoms that have same sizeABoth Assertion and Reason are correct and Reason is the correct explanation for AssertionBBoth Assertion and Reason are correct but Reason is not the correct explanation for AssertionCAssertion is correct but Reason is incorrectDBoth Assertion and Reason are incorrect