<prompt> 1st Visible sign of puberty in males isTesticular enlargement 3ml in Stage IIITesticular enlargement 4ml in Stage IIGrowth of penisTesticular enlargement 3ml in Stage I  <response>: Tanners staging in MalesStage I :Testicular size 4mlStage II : Sparse hair growthScrotum and testis 4ml enlargeStage III : Hair growth darkensPenis grows in lenghtStage IV :Hair growth becomes dense and coarseScrotum and penis continues to growGrowth spurt occursStage V :Hair growth extend to inner thighGenitalia reaches adult size 