Identify the wrong statement with respect to the structure of DNA 

• A

  One turn of the helical structure of DNA has 10 base pairs.

• B

  The nitrogen bases are projected perpendicular to the sugar-phosphate- sugar backbone but face inside.

• C

  A and G of one strand compulsorily base pair with C and T , respectively.

• D

  There are two hydrogen bonds between A and T ,and three hydrogen bonds between G and C.