Select the Correct Statement About This Reaction A) the Equilibrium Lies Very Far to the Right

Multiple Choice

Select the correct statement about this reaction:
$$\begin{array} { l } \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { SH } + { } ^ { - } \mathrm { CN } \rightleftarrows \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm {~S} ^ { - } + \mathrm { HCN } \\\mathrm { p } K _ { \mathrm { a } } = 10.5 \\p K _ { \mathrm { a } } = 9.4 \\\end{array}$$

A) The equilibrium lies very far to the right.
B) The equilibrium constant in the left-to-right direction is 1.1.
C) The equilibrium constant in the left-to-right direction is 12.6.
D) The equilibrium constant in the left-to-right direction is 0.08.
E) The equilibrium constant in the left-to-right direction is −1.1.