What does the presence of a polar covalent bond show about the
electronegativities of its two atoms?
A. The electronegativities of the two atoms are not equal.
B. The effects of electronegativity differences are canceled out.
C. The difference in electronegativities is greater than 1.7.
D. The electronegativities of the two atoms are the same.

answer; i believe the correct answer is (solid gold);

i think   the answer is c hope i'm right

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.