A gardener is planning to plant seven trees-F, G, H. J. R. S. and U on two lawns of IBA.Three are to be planted on the south lawn and four on the north lawn. Four of the trees F, G, H, and J-are medicinal and three R, S, and U are forest. The gardener will satisfy the following requirements in planning the plantation. Each lawn will have at most two forest trees planted on it G cannot be on the same lawn as U H cannot be on the same lawn as R.   If G and  H planted the south lawn. which of the following must also be placed on the south lawn?

A     J

B    U

C    H

D    G

Solution

Correct Answer: Option E

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