According to O*NET, what are some common tasks Petroleum Engineers perform? Check all that apply.

A. assessing and evaluating the ways in which biomass can be used to produce energy
B. analyzing data to recommend placement of wells
C. assessing costs, and estimating the production capabilities and economic value of oil and gas wells
D. analyzing and designing hydrogen-based fuel cells
E. developing plans for oil and gas field drilling
F. directing and monitoring the completion of wells, well testing, or well surveys