I would say "D." Um, wait. I just noticed that "C" and "D" have the same answers.

The speed of sound at sea level is 661 kts (std day). At FL300, it is 589.

So, if you climbed at Mach 1, you would indicate 661 on the deck, and 589 at level-off.

Let's use a more realistic 280 knts on the deck, so about 0.42 Mach. (And 280 True, assuming a mythical plane with no correction factors)

By the time you level off, 0.42 Mach x 589 = 247 True.

BUT: the rare-air at FL300 would mean you are only indicating 154 knts.

Since the wing only "feels" the lift of indicated speed, it would obviously be working harder at 154 indicated, instead of 280.

So: TAS would decrease (a little), Indicated would decrease (a lot), and AoA would increase (a lot).