The operation is defined for all integers a and b by the equation ab = (a - 1)(b - 1). If y12 = 110, what is the value of y ?  Choose the correct choice from the following answers:
A) 11	B) 12	C) 13	D) 15	E) 18
ab = (a - 1)(b - 1)   y12 = (y-1)(12-1) =110 --&gt; y-1=10 --&gt; y=11   11nswer: 11
<result>A</result>
The operation is defined for all integers a and b by the equation ab = (a - 1)(b - 1). If y12 = 110, what is the value of y ?