Which statement is accurate regarding Medicare Part D$?$ a It relies on Medicare using its negotiating power as the world's largest purchaser of drugs to obtain discounts from drug companies $..$ It prevents Medicare from using its negotiating power as the world's largest purchaser of drugs to obtain discounts from drug companies $.$ It encourages utilization of patent reform to lower costs to consumers $.$ It encourages reimporting domestically produced drugs from foreign countries where prices are significantly lower