Kaa alikuwa akigugumia lakini alihangaika wakati anahama, ni nini kilikuwa kinamzuia? 
Choose an answer to this question from the following options:

A: bwawa la wimbi
B: mchanga wa pwani
C: mabwawa ya maji
D: sasa
E: sufuria ya kupikia
The right answer is B