'Z + Y' means 'Y is the son of Z'.

'Z $ Y' means 'Y is the father of Z'.

'Y % Z'' means 'Y is the son-in-law of Z'.

'Z - Y ' means 'Y is the wife of Z'.

'Y * Z' means 'Z is the brother of Y'.

'Y # Z' means 'Z is the only sister of Y'.

Which two symbols can sequentially replace the question marks (?) in the following expression to show that 'D is the wife of W' ?

W % O - B ? C ? D

+ and #

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Please note:

  l   ⇒ Vertical line shown "generation gap".

 =  ⇒ Double lines shown "relation of spouse" 

—  ⇒ Horizontal line shown "relation in same generation other than spouse".

     ⇒ Rectangular box shown " Male".

     ⇒ Circular box shown " Female".

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