If $3^{x+3}+7 = 250,$ then x is equals to :
[A]1
[B]2
[C]3
[D]5

2
$3^{x+3}+7 = 250$
$=> 3^{x+3} = 243$
$=> 3^{x+3} = 3^{5}$
$=> x+3 = 5$
$=> x = 2$
Hence option [B] is the right answer.