Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Calculate standard deviation of Ripe nuts/palm/year'?

A. Count plants shortly after planting
B. Visit inflorescence daily from the moment of opening. Note dates when last male flowers and first female flowers of the same inflorescence open. Record number of days betwen these dates as a positive number if last male flowers come first, as a negative number if first female flowers come first. Observe on 30 palms, calculate mean.
C. Record number of ripe nuts/palm/year measured on each harvest during 4 consecutives years. Harvest frequency is bimonthly for Talls and hybrids, monthly for Dwarfs. Perform on at least 30 palm, calculate standard deviation.
D. Record number of bunches/palm/year measured on each harvest during 4 consecutives years. Harvest frequency is bimonthly for Talls and hybrids, monthly for Dwarfs. Perform on at least 30 palm, calculate mean.

Answer: Record number of ripe nuts/palm/year measured on each harvest during 4 consecutives years. Harvest frequency is bimonthly for Talls and hybrids, monthly for Dwarfs. Perform on at least 30 palm, calculate standard deviation.