相同为“0”不同为“1”它的逻辑关系是（）

A.或逻辑

B.与逻辑

C.异或逻辑

D.同或逻辑

I wandered lonely as a cloud
That floats on high o’er vales and hills,
When all at once I saw a crowd,

A host, of golden daffodils;
Beside the lake, beneath the trees,
Fluttering and dancing in the breeze.
Questions:A. Who is the author
B. What does "A host, of" mean
C. Give a short explanation of the quotation.