If x,y and z are three numbers such that x+y = 13, y+z = 15 and z+x = 16, then the value of `(xy+xz)/(xyz)` is :
यदि x,y तथा z तीन ऐसी संख्याएँ है कि x+y = 13, y+z = 15 तथा z+x =16 है, तो `(xy+xz)/(xyz)` का मान ज्ञात करें ।

Options

A. `36//5`
B. `5//18`
C. `18//5`
D. `5//36`

Answer

B