81. ___ is also called characteristic Lines.A. CMLB. SMLC. Efficient FrontierD. CAL AnswerB. SML 82. Efficient frontier is situated at ___ boundary of opportunity set.A. North westB. North eastC. South westD. South east AnswerA. North west 83. Arbitrage Pricing Theory was introduced by ___A. Charles DowB. Benchamin GrahamC. William sharpD. Stephen S.Rose AnswerD. Stephen S.Rose…