Which statement explains how the development of the hydrogen bomb contributed to the cuban missile crisis?
a. The soviet union threatened the detonation of hydrogen bombs across europe if the u.s. did not allow their missiles in cuba.
b. The hydrogen bomb was small enough to place on the types of missiles the soviet union was going to place in cuba.
c. The soviet union placed conventional missiles on cuba in the hopes of getting u.s. hydrogen bombs removed from europe.
d. The united states blockaded cuba to prevent a stolen hydrogen bomb from being smuggled from cuba to the soviet union.