单选题 It is only more recently that the value of advertising has become increasingly understood.

• A.只是在最近，人们才逐渐了解做广告的价值。
• B.广告在最近才逐渐被人们所了解。
• C.它在最近才体现出对广告价值的理解。
• D.它使广告更加简单易懂。