Aiyra works as a fund manager at the Dhaka Stock Exchange. She observed that the price of Beximco stock rises on Monday and drops on Thursday. One Thursday, she purchased 100 shares of Beximco's stock for 210.30 Tk per share hoping to sell them on Monday and earn a profit. When the market opened on Monday, Mohali Sports declined to 208.5 Tk per share. The market seems to be ............................., because it is not letting her earn excess return

a.Semi strong

b.strong

c.weak

d.A, B, and C