Explain the figures and mention the disadvantages and advantages of the following figures based on the operation management perspective: leading demand with an incremental expansion, leading demand with one-step expansion, lagging demand with incremental expansion, attempts to have an average capacity that straddles demand with incremental expansion

(a) Leading demand with an (b) Leading demand with a (c) Lagging demand with (d) Attempts to have an average incremental expansion one-step expansion incremental expansion capacity that straddles demand with incrementl expansion Expected Expected Expected demand demand Expected demand demand New New capacity New capacity capacity New Demand Demand Demand Demand capacity 1 2 3 1 2 3 1 2 3 1 2 3 Time (years) Time (years) Time (years) Time (years) Figure $7.6