A Seating update...

Just heard on commentary that, there's lot's of spectators standing here...

Is that:

a) To do with the fact that the stadium was about 0.6% ready at 9.30 am?
b) It's an unbelievable game, unparalleled in modern cricketing history?
c) It's so hot that people are turning their bottoms into ribeye steaks by sitting down?
d) They are in fact sitting down, but Jonathan Agnew has seen a new breed of people?

If you answered anything other than a) you are to go to Hove in the middle of winter, have an outdoor net with Graham Gooch in the pouring rain and not kill yourself.