The first sentence has the proper punctuation.
i think A but i am not to sure, i know that it can mean after or like your performing something
<span>Among the descriptions the statement that defines general characteristics of a symbol is C and B, symbols have a concrete, physical existence and symbols carry alternate, associated meanings. The symbol characteristic that have been evaluated are thought to be of focal pertinence to image ease of use research and incorporate solidness, intricacy, significance, recognition, and semantic separation.</span>
1 and 2 !!!!! hope this helps!
