MacMan,Inc The Horizontal Analysis Shows That Cost of Goods Sold Has

MacMan,Inc.reported the following data: $\begin{array}{|l|r|r|r|r|}\hline &2019 & 2018 & \text { Amount } & \text { Percentage } \\\hline\text { Revenues } & \$ 6370 & \$ 4980 & \$ 1390 & 27.91 \% \\\hline \text { Cost of goods sold } & 3370 & \underline{2500} & \underline{870} & 34.80 \% \\\hline \text { Gross profit } & 3000 & 2480 & 520 & 20.97 \% \\\hline \text { Operating expenses: } & & & & \\\hline \text { Sales and marketing expense } & 730 & 630 & 100 & 15.87,00 \% \\\hline\text { General and administrative } & 420 & 440 & -20 & -4.55 \% \\\text { expenses } & & & & \\\hline \text { Research and development } \\\text { expense } & 470 & 410 & 60 & 14.63 \%\\ \hline\text { Other expense }& 430 & 730 & (300) & (41.10) \%\\\hline \text { Total operating expenses } & \underline{2050} & 2210 & (160) & (7.24) \% \\\hline \text { Income before income tax } & 950 & 270 & 680 & 251.85 \% \\\hline \text { Income tax expense } & \underline{260} & \underline{250} & \$ 10 & 4 \% \\\hline \text { Net income (loss) } & \$ 690 & \$ 20 & \$ 670 & 3350 \% \\\hline\end{array}$
The horizontal analysis shows that cost of goods sold has ________.(Round your answer to two decimal places.)

A) increased by 27.91%
B) decreased by 27.91%
C) increased by 34.80%
D) decreased by 34.80%