What is the effect of the send-lifetime local 23:59:00 31 December 31 2013 infinite command?

What is the effect of the send-lifetime local 23:59:00 31 December 31 2013 infinite command?
A . It configures the device to begin transmitting the authentication key to other devices at 00:00:00 local time on January 1, 2014 and continue using the key indefinitely.
B . It configures the device to begin transmitting the authentication key to other devices at 23:59:00 local time on December 31, 2013 and continue using the key indefinitely.
C . It configures the device to begin accepting the authentication key from other devices immediately and stop accepting the key at 23:59:00 local time on December 31, 2013.
D . It configures the device to generate a new authentication key and transmit it to other devices at local time on December 31, 2013.
E . It configures the device to begin accepting the authentication key from other devices at local time on December 31, 2013 and continue accepting the key indefinitely.
F . It configures the device to begin accepting the authentication key from other devices at 00:00:00 local time on January 1, 2014 and continue accepting the key indefinitely.

View Answer

Answer: B

Explanation:

#secure boot-image

This command enables or disables the securing of the running Cisco IOS image. Because this command has the effect of "hiding" the running image, the image file will not be included in any directory listing of the disk.

Source: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/security/s1/sec-s1-cr-book/sec-cr­s1.html#wp3328121947