Please explain

[varunmehta.ism]

There is generally agreement that feral swine are unwelcome - such as the Asian carp that are threatening to invade Lake Michigan, but that are far larger, more vicious and mounted on four legs.
A)such as the Asian carp that are threatening to invade Lake Michigan, but that are far larger, more vicious and mounted on four legs
B)like the Asian carp that have threatened an invasion of Lake Michigan, but far larger, more vicious, and mounted on four legs
C)like the Asian carp that are threatening to invade Lake Michigan, but are far larger, more vicious, and are mounted on four legs
D)like the Asian carp that are threatening to invade Lake Michigan, but far larger, more vicious, and mounted on four legs
E)such as the Asian carp that threaten to invade Lake Michigan, but are far larger and more vicious, and mounted on four legs

why D?
isn't there a Parallelism issue?

[ghag.kamlesh]

I think there is a comparison issue..two things that are compared - Feral swine and Asian carp.

Any other views on this...

Thanks.

Kamlesh

[jlucero]

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