The Jewish Calendar Is Kept Roughly Synchronized with a Solar

Multiple Choice

The Jewish calendar is kept roughly synchronized with a solar calendar by

A) having a thirteenth month with 5 days each year.
B) having the first lunar month begin on the spring equinox.
C) skipping a month every 7 out of 19 years.
D) adding a thirteenth lunar month to 7 out of every 19 years.
E) having the first lunar month begin on the summer solstice.