The editors of a journal that publishes three issues a year will devote the upcoming first, second, and third issues—in that order—exclusively to essays written by seven writers: R, S, T, U, V, W, and X. Each of the seven writers will have at least one essay published, but some may have more than one essay published. The following restrictions apply to the publication of their essays:
1. If an essay by R appears in an issue, then an essay by S must also appear in that issue.
2. If an essay by U appears in an issue, then an essay by W must appear in the immediately preceding issue.
3. An essay by W cannot be published in an issue that contains an essay by X.
4. No writer may publish in each of two consecutively published issues or twice in the same issue.
5. Each of the issues being prepared must contain at least two essays.
6. The seven writers' essays can only appear in the upcoming first, second, and third issues.
1. The first issue of the journal can consist exclusively of essays by which of the following groups of writers?
(A) R and T
(B) U and W
(C) R, W, and X
(D) T, V, and W
(E) R, S, V, W, and X
2. If the first issue consists exclusively of essays by R and S, then the second issue can consist exclusively of essays by which of the following groups of writers?
(A) T and V
(B) T and W
(C) U and X
(D) R, S, and X
(E) T, W, and X
3. Which of the following writers CANNOT contribute to the first issue of the journal?
(A) T
(B) U
(C) V
(D) W
(E) X
4. If the first issue consists exclusively of essays by S, T, and X, then the third issue must contain an essay by which of the following writers?
(A) S
(B) T
(C) V
(D) W
(E) X
5. If the third issue consists exclusively of essays by S, T, and U, then the second issue must have consisted of essays by which of the following groups of writers?
(A) R and V
(B) R and X
(C) S and W
(D) V and W
(E) V and X
