Slope and intercept of the BET equation relating $\left[a_{w} / x\left(1-a_{w}\right)\right]$ and $a_{w},$ where $a_{w}$ is water activity and $x$ is the moisture content on dry basis, are 18 and $2,$ respectively. The values of thermodynamic constant $\mathrm{C}$ and BET monolayer moisture content $x_{m}(\%)$ are respectively

(A) 40 and 20

(B) 30 and 15

(C) 20 and 10

(D) 10 and 5

Slope and intercept of the BET equation relating $\left[a_{w} / x\left(1-a_{w}\right)\right]$ and $a_{w},$ where $a_{w}$ is water activity and $x$ is the moisture content on dry basis, are 18 and $2,$ respectively. The values of thermodynamic constant $\mathrm{C}$ and BET monolayer moisture content $x_{m}(\%)$ are respectively

(A) 40 and 20

(B) 30 and 15

(C) 20 and 10

(D) 10 and 5

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