慢粒的最突出体征是( )

A．肝脏肿大
B．脾脏肿大
C．皮肤及黏膜瘀点
D．胫骨压痛
E．淋巴结肿大

Among the following statements, which is tree about sea horse().

A. The sea horse has a long snout that is not convenient for sucking.

B. Sea horses have no scales at all.

C. The sea horse is unable to grasp sea grass or coral.

D. Sea horse can move very fast over long distance.