A. If Napolean got married, he conquered Alsace. Napolean did not conquer Alsace. So, he got married
B. All foxes are mammals. Some mammals are hedgehogs. So, some foxes are hedgehogs
C. If Napolean got married, he conquered Alsace. Napoleon did not get married. So, he did not conquer Alsace.
D. Every mouse is larger than my cat. Freddie is a mouse. So Freddie is larger than my cat.