Relationship between above pair $(A)$ & $(B)$ is

Which of the following compound has one of the stereoisomers as a meso compound?

Which of the following is erythro form and optically active ?

Which of the following is an chiral compound

The number of optical isomers for the given compound

$\begin{array}{*{20}{c}}
  {C{H_3} - CH - CH - C{H_2} - COOH} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {\,\,OH\,\,\,\,\,\,\,\,Cl\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}$

Ignoring specific markings, which of the following objects are chiral ?
$(I)$ a shoe $(II)$ a book $(III)$ a pencil 
$(IV)$ a pair of shoes (consider the pair as one object)
$(V)$ a pair of scissors