How Do the Rational Basis and the Intermediate Standard of Review

How do the rational basis and the intermediate standard of review differ?

A) The rational basis standard requires an important governmental objective for classification; the intermediate standard requires the classification to be necessary.
B) The rational basis standard applies only to racial classifications; the intermediate standard applies to gender and sexual orientation classifications.
C) Those who dislike a law will have an easier time getting it overturned if the Supreme Court applies the intermediate standard instead of the rational basis test.
D) It is easier for the government to demonstrate that there is a rational basis for a law than to meet the requirements of the intermediate standard.