question to two factor authorization

[CISSP_Candidate]

I am so much confused about the answer and explanation provided by one of the dumps i am using ... Can u please help me out.

The answer says D. My answer is A coz two factor auth means PIN and CARD so it must be technical. But answer is D

And explanation also tells that .... so what is correct here

A two factor authentication method is considered as a:
A. Technical control
B. Patching control
C. Corrective control
D. Logical control

Answer: D

Explanation:
By technical controls we mean some or all of the following:
Access Control software
Antivirus Software
Passwords
Smart Cards
Encryption
Call-back systems
Two factor authentication

[Jescoi]

I think there have been lots of posts on the forums warning about the quality of dumps - beware !
I would pick A for this one. The explaination points to A, though the answer is marked D.