What Is Odd About the Existence of Planets Around PSR

Multiple Choice

What is odd about the existence of planets around PSR J1257+12?

A) The gravitational pull of the pulsar should have pulled the planets down onto it.
B) Planets would not be expected to survive the supernova explosion that created the pulsar.
C) The planets should have been destroyed by the radiation from the pulsar.
D) The pulsar is rotating so fast that the planets should have been flung into space.