$34.$ Baseline Performance: A cost performance index $($CPI$)$ of $0\mathrm{.}89$ means the project is spending behind plan by $11\%.$ Thus, CPI represents a measure that indicates

a$.$ Project spending is only progressing as planned, but no better.

b$.$ How efficiently work is being performed with regard to the budgeted cost of work.

c$.$ The project is gladly reporting it is only getting $89$ cents out of every dollar invested.

d$.$ The project is experiencing a significant cost under run.

e$.$ The cost baseline is likely inaccurate by $11\%.$

Know value & meaning: $<1\mathrm{.}0=$ earned less than planned $>1\mathrm{.}0$ earned more than planned