If $a,b,c,d,e,f,g,h,j$ represents different digits from $1$ to $9$ such that $a+\frac{b}{c}+\frac{d}{e}\times f-\left(g+\frac{h}{j} \right) = N$, where $N$ is a whole number. What is the value of $\frac{d}{e}\times f$ to maximize $N$? 
选项为:A:$$36$$  B:$$56$$  C:$$63$$  D:$$72$$  E:$$90$$  请回答其中一个选项.