There has been a nation-wide shortage of building materials, ( )which the trade is only just recovering.

A．Date of completion of discharge；destination；Mark & N
B．Mark & No；destination; Date of completion of discharge
C．Date of completion of discharge；Mark & N; destination
D．Mark & No；Date of completion of discharge；destination

A．quality；weight；quantity
B．quantity；quality；weight
C．weight；quality；quantity
D．quantity；weight；quality