Read the text and determine if the sentence is true (see options at the end):

In Australia, Australian National Flag Day is celebrated on 3 September. It commemorates the day in 1901 on which the Australian National Flag was first flown. On that day Prime Minister Edmund Barton announced the winners of a competition to design a flag for Australia. A large flag, 5.5 by , was flown over the dome of the Royal Exhibition Building in Melbourne.

Sentence:  In Australia, Australian National Flag Day is celebrated on 3 September. It commemorates the day in 1901 on which the Australian National Flag was first flown. The  flag was made of linen.
OPT: A). Yes; B). It's impossible to say; C). No;
B).