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Give the decreasing order of reactivity of Diels `-` Alder reactions for the following :

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Give the decreasing order of reactivity of Diels `-` Alder reactions for the following :
image
A. `(I)gt(II)gt(III)gt(IV)`
B. `(IV)gt(III)gt(II)gt(I)`
C. `(IV)gt(III)gt(I)gt(II)`
D. `(II)gt(I)gt(III)gt(IV)`
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The Diels`-`Alder reaction proceeds faster when di`-`enophiles have `bar(e)-` withdrawing groups and dienes have `bar(e)-` donating group.
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