TORONTO, April 23 Canada's main stock index turned negative during a sharp slip in the last half hour of trade on Wednesday. The Toronto Stock Exchange's S&P/TSX composite index shed around 20 points in minutes, pushing it more than 8 points below its last close, to 14,547.56. Six of the 10 main groups were in negative territory. (Reporting by Alastair Sharp; Editing by Meredith Mazzilli)

Based on that paragraph can we conclude that this sentence is true?
More than half of the 10 main groups were in the negative territory.

Select from:
[I] Yes;
[II] It's impossible to say;
[III] No;
[I]