Why should strategic managers be concerned with the life cycle of the industry in which their companies operate?

a$.$ The life cycle of an industry will only indicate the amount of investment a manager should put into research and development.

b$.$ Recognizing the crucial points in an industry's development is essential to forecasting and strategizing for the future.

c$.$ The stage an industry is in will predict whether the company can be successful.

d$.$ An industry life cycle is the driver for developing a mission and vision statement.