Which of the Following Characterizes a Tropical Savanna Climate

Which of the following characterizes a tropical savanna climate?

A) it experiences a summer wet season,and is dominated by the ITCZ for nearly 12 months of the year.
B) it experiences a wet summer and dry winter,and is dominated by the ITCZ for 6 months or less during the year.
C) all months receive precipitation in excess of 6 cm.
D) it has an average warmest month below 18°C.
E) there is a surplus of water year-round.