请教GWD21-Q27两个选项不能分辨了

 GWD21-Q27:

The electronics company has unveiled what
it claims to be the world’s smallest network digital camcorder, the length
of which is that of a handheld computer, and it weighs less than 11 ounces.

1. to be the world’s smallest network digital camcorder, the
        length of which is that of a handheld computer, and it weighs
2. to be the smallest network digital camcorder in the world,
        which is as long as a handheld computer, weighing
3. is the smallest network digital camcorder in the world, which
        is as long as a handheld computer, and it weighs
4. is the world’s smallest network digital camcorder, which is as
        long as a handheld computer and weighs
5. is the world’s smallest network digital camcorder, the length
        of which is that of a handheld computer, weighing

   Answer: bd??????

The Environmental Protection Agency’s
proposal to place restrictions on both diesel fuel and diesel engines has
sparked a counterattack by the oil industry, saying that the move will
exacerbate the nation’s fuel supply problems.

1. on both
        diesel fuel and diesel engines has sparked a counterattack by the oil
        industry, saying
2. on both
        diesel fuel and engines have sparked the oil industry to counterattack,
        and they say
3. on both
        diesel fuel and diesel engines has sparked a counterattack by the oil
        industry, which says
4. both on
        diesel fuel and engines has sparked the oil industry to a counterattack,
        saying
5. both on
        diesel fuel and diesel engines have sparked the oil industry to
        counterattack, and it says

   Answer:c

一开始分不清A,B.现在才看见A中的it指带了两个不同的东东