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. Which of the following  groups  could be planted on the north lawn?