This document discusses corporate financing decisions and cash flow issues for firms. It covers topics like cash insolvency, cash inadequacy, determining debt capacity, and using simulation and option pricing models to evaluate financing choices. Key factors that influence the valuation of call options are discussed, including the current stock price, exercise price, risk-free rate, time to expiration, and price volatility. The Black-Scholes option pricing model is also introduced as a way to calculate the theoretical value of an option.