If there are 1030 grains of sand on Playa de Sonrisa, how many of these grains of sand are submerged by the ocean at least once a day?
A. 40% of the grains of sand are submerged at least twice a day.
B. 55% of the grains of sand are not submerged exactly once a day.
A. 40% of the grains of sand are submerged at least twice a day.
B. 55% of the grains of sand are not submerged exactly once a day.