Samson Coannounced Its Merger Plans on October 25 and Had a a Daily

Samson Co.announced its merger plans on October 25 and had a daily return of 0.7 percent.Thompson Co.announced its merger plans on October 26 and had a daily return of 0.4 percent.The Whitewood Co.announced its merger plans on October 27 and had a daily return of 0.1 percent.The daily market returns for October 25 through October 27 were 0.1,-0.3,and 0.4,respectively.What is the combined cumulative abnormal return for the announcement date?

A) 0.0 percent
B) 0.2 percent
C) 0.6 percent
D) 0.8 percent
E) 1.0 percent