The sixth term of the sequence 11, 13, 17, 19, 23, __, 29 is :

The sixth term of the sequence 11, 13, 17, 19, 23, __, 29 is :
[A]19
[B]22
[C]24
[D]25

25
The sequence is based on the following rule :
11\xrightarrow{+2}13\xrightarrow{+4}17\xrightarrow{+2}19\xrightarrow{+4}23\xrightarrow{+2}\underline{25}\xrightarrow{+4}29
Hence, the sixth term is 25.

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