A, B, and C are all correct. The Aztecs believed the Spanish were fulfilling a prophecy from one of their gods (I forget which, but the god had light skin and would return from over the sea) and they welcomed them with gifts. The Spanish were carriers of small pox, which the Aztecs had no natural defense against.
I have gone back and forth between 50mg and 100mg Toprol xl. My dr just prescribes the 100 mg tablet and tells me to split it in half. As Lenin said just don't crush the half or chew it and you should be fine. I have split mine for a long time.
Do not crush or chew extended-release tablets. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split the tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing. To reduce your risk of side effects, your doctor may direct you to start this medication at a low dose and gradually increase your dose.