Plzzz will in the late 1800s, how did excelsior works differ from standard oil? a.)excelsior works was rockefeller’s first oil refinery, while standard oil was the huge corporation he later developed. b.)standard oil was rockefeller’s first oil refinery, while excelsior works was the huge corporation he later developed. c.)excelsior works was part of rockefeller’s steel-making business, while standard oil was part of rockefeller’s oil-refining business. d.)standard oil was part of rockefeller’s steel-making business, while excelsior works was part of rockefeller’s oil-refining business.