Which of the following answers correctly identifies the trend in energy consumption since 1850? (a) From 1850 to 1885, coal made up the majority of energy consumed. (b) From 1850 to 2019, the total amount of energy consumed has increased. (c) Hydroelectric was dominant in the 19th century, but its consumption has remained unchanged since then. (d) Natural gas consumption has contributed the least to energy consumption since 1850.