Long‑chain fatty acids are activated in the cytosol, but they are oxidized in mitochondria. Three enzymes enable the transport of activated long‑chain fatty acids across the inner mitochondrial membrane. Classify each of the enzyme locations or functions as describing carnitine acyltransferase I (CAT I), translocase, or carnitine acyltransferase II (CAT II).

a. transfers an acyl group to carnitine
b. located on the cytoplasmic side of the mitochondrial membrane
c. shuttles acyl carnitine across the inner mitochondrial membrane
d. regenerates carnitine and acyl COA
e. located on the matrix side of the inner mitochondrial membrane
f. shuttles carnitine across the inner mitochondrial membrane