Given the Following Syllogism

Given the following syllogism:
No tigers are bears.

This syllogism commits the existential fallacy from:

A) The Aristotelian standpoint but not from the Boolean standpoint.
B) Both the Boolean and the Aristotelian standpoints.
C) The Boolean standpoint but not from the Aristotelian standpoint.
D) Neither the Boolean nor the Aristotelian standpoint.
E) The syllogistic standpoint.