A.is a mixture of a saturated and unsaturated hydrocarbons in the C3 and C4 range
B.is a mixture of methane and carbon dioxide
C.is a mixture of methane and hydrogen
D.is a mixture of saturated and unsaturated hydrocarbons in the C6 and C7 range
A.is a mixture of a saturated and unsaturated hydrocarbons in the C3 and C4 range
B.is a mixture of methane and carbon dioxide
C.is a mixture of methane and hydrogen
D.is a mixture of saturated and unsaturated hydrocarbons in the C6 and C7 range