Turndown ratio of a gas burner is equal to the
(A) Maximum to minimum heat input ratio
(B) Maximum to minimum permissible gas flow rate
(C) Both (A) & (B)
(D) Minimum to maximum heat input ratio
(A) Maximum to minimum heat input ratio
(B) Maximum to minimum permissible gas flow rate
(C) Both (A) & (B)
(D) Minimum to maximum heat input ratio