形容词最高级前面一般要加the,但当形容词的最高级作表语时可以不加the,而副词最高级前面可以不加the，下列哪一项是副词最高级的用法？
A: It's safest to go by bus.
B: He felt the least desire to go to bed.
C: Of these sports, I like rowing most.
D: It's a most extraordinary thing.
A: It's safest to go by bus.
B: He felt the least desire to go to bed.
C: Of these sports, I like rowing most.
D: It's a most extraordinary thing.
