T/F: a. A bank that buys the CDX North America contract can reduce its transactions costs relative to buying protection on all 125 single reference names. b. The typical spread on a junk bond is 400 bp whereas the typical CDS premium on a junk bond is only 50 bp. T/F: a. A bank that buys the CDX North America contract can reduce its transactions costs relative to buying protection on all 125 single reference names. b. The typical spread on a junk bond is 400 bp whereas the typical CDS premium on a junk bond is only 50 bp