An irrigated coffee producer in Minas Gerais received a statistical consulting report, containing, among other information, the standard deviation of the productions from one harvest of the plots on his property. The plots have the same area of $30000\mathrm{~m}^{2}$ and the value obtained for the standard deviation was $90\mathrm{~kg}/\mathrm{plot}$. The producer must present information about the production and the variance of these productions in bags of 60 kg per hectare ($10000\mathrm{~m}^{2}$). The variance of the productions of the plots expressed in (bags/hectare)$^{2}$ is (A) 20.25. (B) 4.50. (C) 0.71. (D) 0.50. (E) 0.25.
An irrigated coffee producer in Minas Gerais received a statistical consulting report, containing, among other information, the standard deviation of the productions from one harvest of the plots on his property. The plots have the same area of $30000\mathrm{~m}^{2}$ and the value obtained for the standard deviation was $90\mathrm{~kg}/\mathrm{plot}$. The producer must present information about the production and the variance of these productions in bags of 60 kg per hectare ($10000\mathrm{~m}^{2}$).
The variance of the productions of the plots expressed in (bags/hectare)$^{2}$ is\\
(A) 20.25.\\
(B) 4.50.\\
(C) 0.71.\\
(D) 0.50.\\
(E) 0.25.