Suppose a researcher uses a single SELEX experiment to select for an RNA molecule that catalyzes the hydrolysis of a particular ester. Select statements that describe good design parameters for her SELEX experiment. The chromatographic resin must be bound to an analog of the products of the ester hydrolysis reaction. RNAs with potential hydrolysis activity will be captured by ion exchange chromatography. A transition-state analog of the ester hydrolysis reaction will be tethered to a chromatographic resin. A 30-nucleotide RNA is beyond the practical size limit of her SELEX experiment. The practical limit for length of her RNA molecule is 10 nucleotides