Clark and Florence Wallace, a husband-and-wife medical team, worked steadily and efficiently through the night, butsipping their coffee the next morning, she noticed that he seemed disoriented .
(A)sipping their coffee the next morning,she noticed that he seemed disoriented
(B)sipping their coffee the next morning,he seemed to be disoriented,she noticed
(C)as they sipped their coffee the next morning,she noticed thathe seemed disoriented
(D) as they were sipping their coffee the next morning,
...
(A)sipping their coffee the next morning,she noticed that he seemed disoriented
(B)sipping their coffee the next morning,he seemed to be disoriented,she noticed
(C)as they sipped their coffee the next morning,she noticed thathe seemed disoriented
(D) as they were sipping their coffee the next morning,
...
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