Hydrological rhythm refers to the periodic and rhythmic changes of lake water regime. The generalized hydrological rhythm includes diurnal, monthly, seasonal and interannual rhythms. Under normal circumstances, due to the stable climate and underlying surface of the basin, the multi-year average water level of the lake tends to be stable, that is, the normal annual average water level of the lake. Therefore, the interannual rhythm of the lake is characterized by the abrupt change driven by interference factors and the stage stability after adapting to the disturbance, and there is no gradual trend, while the circadian rhythm has a weak effect on the ecosystem. Therefore, narrow hydrologic rhythm especially refers to monthly rhythm and seasonal rhythm.
According to the above definition, which of the following options involves the narrow hydrological rhythm?
The annual precipitation of Dongting Lake was 1560 mm last year, of which the precipitation from April to June accounted for about half of the whole year