Constituents of the producer gas contributing to its heating value are
(A) $\mathrm{CO}$ and $\mathrm{CO}_{2}$
(B) $\mathrm{CH}_{4}$ and $\mathrm{CO}_{2}$
(C) $\mathrm{CO}$ and $\mathrm{H}_{2}$
(D) $\mathrm{CO}_{2}$ and $\mathrm{H}_{2}$
Constituents of the producer gas contributing to its heating value are
(A) $\mathrm{CO}$ and $\mathrm{CO}_{2}$
(B) $\mathrm{CH}_{4}$ and $\mathrm{CO}_{2}$
(C) $\mathrm{CO}$ and $\mathrm{H}_{2}$
(D) $\mathrm{CO}_{2}$ and $\mathrm{H}_{2}$