By name or number, identify all of the following three statements that are true regarding GFR, or glomerular filtration rate: 1) The renal clearance rate is equivalent to the GFR for inulin, a polysaccharide that's only filtered and not excreted nor secreted 2) Constricting the afferent arteriole leads to an increased GFR 3) Dilating the efferent arteriole leads to increased GFR