A soil sample is subjected initially to an equal all$-$round stress of $100$ kPa. Draw stress paths for the loading conditions, when

$($a$)$h is held constant and $$v increases to $200$ kPa,

$($b$)$h and $$v are both increased to $200$ kPa,

$($c$)$v is held constant and $$h is increased to $200$ kPa,

$($d$)$v is held constant while $$h is decreased to $25$ Kpa

$($e$)$v is increased by $50$ kPa while $$h decreases by $50$ kPa