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.
Usually, the first dose of metoprolol is 100 mg a day taken in either one or two doses. Your doctor may gradually increase this dose. For people taking the long-acting Toprol XL tablets, the initial dose ranges from 25 to 100 mg once a day.