The association between low birth weight and maternal smoking during pregnancy can be studied by obtaining smoking histories from women at the time of the first prenatal visit and then subsequently measuring birth weight in Kilograms (Kgs) at delivery according to smoking histories dividing the mothers into multiple groups (non-smokers, 1-9 cigarettes, 10-19 cigarettes, >=20 cigarettes). What would you use to assess this association?

• A. Chi-square test
• B. Student's t-test
• C. Analysis of variance (ANOVA)
• D. Chi-Square Good of Fit test