The correct option is B 15
The multiples of 13 between 200 and 400 would be represented by the series:
208, 221, 234, 247, 260, 273, 286, 299, 312, 325, 338, 351, 364, 377, and 390.
There are a total of 15 numbers in the above series.
Option (b) is correct.
Note: The above series is an Arithmetic Progression.