An Average Home in Colorado Requires 20 $\rarr$ CO₂(g) + 2H₂O(l) $\Delta$

An average home in Colorado requires 20. GJ of heat per month. How many grams of natural gas (methane) must be burned to supply this energy
CH₄(g) + 2O₂(g) $\rarr$ CO₂(g) + 2H₂O(l) $\Delta$ H ^$\circ$ _rxn= -890.4 kJ/mol

A) 7.1 * 10^-4 g
B) 1.4 * 10³ g
C) 1.4 * 10⁴ g
D) 2.2 * 10⁴ g
E) 3.6 * 10⁵ g