Everybody needs calcium, but it is quite possible for a similar person to be totally healthy by eating only ________.

A．as half much          B．as much half          C．half as much as         D．half as much

Everybody needs calcium, but it is quite possible for a similar person to be totally healthy by eating only ________.

A. as half much　 B. as much half　 C. half as much as　　 D. half as much