Directions: Given below are statements (I) and (II). These statements may be either independent causes or may be effects of independent causes or a common cause. One of these statements may be the effect of the other statements. Read both the statements and decide which of the following answer choice correctly depicts the relationship between these two statements.  

1. Rain and thundershowers bashed the city during the past three days.
2. Many people stayed indoor for the past three days.