A boy is balancing a plate of pastries on his head while another boy sits next to him on a rail .
It is impossible that a boy is practicing his magic tricks while his cousin watches from a rail .
It is impossible that a boy is practicing his magic tricks while his cousin watches from a rail .
It is highly likely that a boy is practicing his magic tricks while his cousin watches from a rail .
A boy is practicing his magic tricks while his cousin watches from a rail .