Which of the Following Is True of Sex and Marriage

Which of the following is true of sex and marriage in the 1950s?

A) City jobs for both young men and women proliferated, providing new venues for urban youth to engage in sexual encounters.
B) Unavailability of contraceptives kept young couples only 'necking' and 'petting' rather than 'going all the way.'
C) Conservative interests drove the marriage age down, thereby 'sparing' young couples from the need to engage in premarital sex.
D) The rise of suburbs and availability of cars gave youth more opportunity to socialize without parents' or neighbors' supervision.