31. A major advantage of two-dimensional protein gels as a high-throughput technology for protein analysis is that: (A) Sample preparation and the process or running two-dimensional gels is straightforward and can be automated. (B) The result of two-dimensional gels includes data on both the size and the charge of thousands of proteins. (C) The etechnique is well suited to the detection of low-abundance proteins. (D) The technique is well suited to the detection of hydrophobic proteins.