Which of the Following People in Widget Corp

Which of the following people in Widget Corp., an information technology company, is most likely the chief sustainability officer?

A) Mark, who is responsible for leading the development and execution of the company's long-term strategy with the sole goal to create shareholder value.
B) Martha, who recruits top information technology professionals from different professional universities.
C) John, who institutes an energy-efficiency review of every hardware and software product manufactured by the company.
D) Julia, who oversees the day-to-day business operations in the company.