The correct option is B 50%
Let the C.P. of each article be Rs. x.
Then, C.P. of 16 articles = Rs. 16x
S.P. of 15 articles
= Rs. 16x×135100
= Rs. 21.6x
S.P. of each article
= Rs. 21.6x15=1.44x
If S.P. is Rs. 96, then marked price = Rs. 100
If S.P. is Rs. 1.44x, then marked price
=10096×1.44x=1.5x
⇒ Marked price =x+0.5x
∴ Marked price =50% above C.P.