What Is Mala Htun's Reasoning for Why Ethnicity-Based Political Groups

What is Mala Htun's reasoning for why ethnicity-based political groups are more likely to form than gender-based political groups?

A) Ethnicity-based groups do not alienate the other half of the electorate like gender-based groups do.
B) Ethnicity-based groups face more discrimination than gender-based groups.
C) Ethnicity tends to coincide with other forms of cleavages, whereas gender tends to crosscut them.
D) Ethnic tends to crosscut with other forms of cleavages, whereas gender tends to coincide with them.