B. 2DES or double DES is no more secure than single DES and is susceptible to a meet in the middle attack. Answers A, C, and D are incorrect because none are susceptible to a meet in the middle attack. B. 2DES or double DES is no more secure than single DES and is susceptible to a meet in the middle attack. Answers A, C, and D are incorrect because none are susceptible to a meet in the middle attack. Solution B. 2DES or double DES is no more secure than single DES and is susceptible to a meet in the middle attack. Answers A, C, and D are incorrect because none are susceptible to a meet in the middle attack. B. 2DES or double DES is no more secure than single DES and is susceptible to a meet in the middle attack. Answers A, C, and D are incorrect because none are susceptible to a meet in the middle attack..