How would a $50\%$ stock dividend affect the following accounts after declaration and distribution, assuming the stock sells for more than its par value?

$\backslash$table$[[,$Additional Paid In Capital,Retained Earnings$],[($a$),$No effect,Decrease$],[($b$),$Increase,Decrease$],[($c$),$Decrease,Decrease$],[($d$),$No effect,No effect$]]$

$($a$)$

$($c$)$

$($b$)$