I'd like the colour, but I’m afraid it’s ___expensive.

A．much too

B．too much

C．many too

D．too many

患者，男性，39岁，口内多处溃疡，疼痛不能进食。检查见唇颊及舌缘黏膜有小米粒的溃疡十余个，散在分布，周围黏膜广泛充血红肿。以往曾有多次类似病史发作。该患者应诊断为（）

A.天疱疮

B.疱疹性龈口炎

C.白塞病

D.带状疱疹

E.疱疹样口疮