I am not understanding the rules of finding the change in enthalpy using chemical equations. Please show all work and list rules

12. Coal gasification can be represented by the equation: 2C(s)+2H2O(g)CH4(g)+CO2(g)H=? Use the following information to find H for the reaction above. CO(g)+H2(g)C(s)+H2O(g)CO(g)+H2O(g)CO2(g)+H2(g)CH4(g)+H2O(g)CO(g)+3H2(g)H=131kJH=41kJH=+206kJ A) 15kJ B) 116kJ C) 372kJ D) 15kJ E) 116kJ