The correct answer is A. Mexican troops defeated the Texans, and 17 Texans were executed.
Explanation
Mier Expedition was a military plan organized by Texas militias to control part of the border territory that the Mexicans had under their power at the same time, the operation was a form of retaliation against the Mexicans for the events that occurred in the Dawson Massacre. One of the highlights of this operation, apart from the defeat of the Texas militias, was the method used by the Mexicans to decide which of the Texans under their power would be executed. For this task, one of the Mexican commanders put 17 black beans in a bag full of white beans, later the Texans (blindfolded) had to take out a bean, those who took out the black bean were executed. Therefore, the correct answer is A. Mexican troops defeated the Texans, and 17 Texans were executed.