For each of the statements (a)–(d), indicate whether it is true or false. 

a. The distribution of the variable sex can be skewed to the left. 

b. The distribution of the variable age can be skewed to the left. 

c. A variable that is skewed to the left would yield a histogram with the bulk of the values contained in bars on the left and a few values in bars on the right. 

d. A variable that is skewed to the left would yield a histogram with the bulk of the values contained in bars on the right and a few values in bars on the left.