Which of the statements don’t hold true for the forensics and the amplification carried out?

• A. In the case of forensics, conventional methods such as southern blotting are used very effectively
• B. In cases of bone fragments which contain less than 300 nucleotides conventional methods can’t be applied as they involve southern blotting, restriction digestion etc
• C. The poor condition of DNA also makes the PCR amplification difficult
• D. Microsatellites composed of simply varying repeats of CA sequences are used