单选题After 15 years in the United States, he has finally decided to _____ American citizenship.A concentrate onB apply forC look out forD appeal on

_____________. That was five years ago and he has no regrets about his new direction. “My previous work didn’t have an artistic element to it, whereas this is exciting and creative,” he says. “I really enjoy the design side.”

［A］Graham has become increasingly busy, supplying flat-packed weathervanes to clients worldwide.

［B］Graham decided to concentrate his efforts on a weathervane business. He had served an apprenticeship as a precision engineer and had worked in that trade for 15 years when he and his wife, Liz, agreed to swap roles—she went out to work as an architectural assistant and he stayed at home to look after the children and build up the business.

［C］Last month, a local school was opened with his galleon ship weathervane hoisted above it.

［D］“For centuries, weathervanes have kept communities in touch with the elements, signaling those shifts in wind direction that bring about changes in the weather,” he explains.

［E］Graham has no plans for expansion, as he wants to keep the business as a rural craft.

［F］Graham has now perfected over 100 original designs. He works to very fine detail, always seeking approval for the design of the silhouette from the customer before proceeding with the hand-cutting.