[单选题]
1. What is the proteome of a ceu gzlr bmw:x50v4twa. b7f,6n6 ek 8rpl*fi( ih6rd /9jxl.69 nomoeqz l?
A. The enzymes that are present in the cell.
B. The transcriptome.
C. The types of proteins that are present in a cell.
D. The total number of proteins a cell can produce.