Need answer immidietly..plz expert attend..need correct answer with proper explanation...i know the answer want explanat

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Need answer immidietly..plz expert attend..need correct answerwith proper explanation...i know the answer want explanation.
Suppose that the price level is constant and that Investmentdecreases sharply.
This would cause a fall in output that would be equalto
A. a fraction of the initial change in investment spending basedon the multiplier effect.
B. a multiple of the initial change in investment spending basedon the multiplier effect.
C. the initial change in investment spending based on themultiplier effect.
D. the rise in government spending to compensate.
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