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.
Low blood sugar levels have been reported in people taking such drugs. Normal doses of metoprolol probably do not significantly increase the risk of low blood sugar for most people. However, Toprol-XL can make low blood sugar less noticeable (which can be dangerous, especially for people with diabetes). This potential side effect of beta blockers is more common in infants and children, while fasting (such as before surgery), after prolonged exercise, or in people with kidney disease or diabetes.