13. According to the reaction Pb(s)+S(s)PbS(s), Which one is correct when 20.7 grams of lead are reacted with 6.4 grams of sulfur (S.32 gr mat, Pb:207gr/mol)? a. the sulfur will be in excess by 3.2 grams D. there will be an excess of 20.7 grams of lead c. the lead and sulfur will react completely without any excess reactants d. the sulfur will be the limiting factor in the reaction e. there will be an excess of 10.35 grams of lead