求助 XDF p16 Q1

1.Margaret Courtney-Clarke has traveled to remote dwellings in the Transvaal to photograph the art of Ndebele women,whose murals are brilliantly colored,their geometrical symmetries embellished with old and new iconography and in a style that varies from woman to woman and house to house.

(A) whose murals are brilliantly colored, their geometrical symmetries embellished with old and  new iconography and in a style that varies from woman to woman and house to house.

(E)with murals that are brilliantly colored; their geometrical symmetries embellished with old and  new iconography ,and their styles vary among women and houses.

答案是A,为什么不用独立主格结构呢？