1) The first question appears incorrect. You should calculate the expiration-breakeven-point for each strike-price and then properly draw the P&L lines. You're comparing one-$75-strike-call to three-$85-strike-calls. You seemed to have drawn them parallel, not intersecting. What is a "point of indifference". Is that where they intersect? If so, they should crossover and not be parallel.Quote from howard101:
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