Which of the following are thought to be rapidly rotating neutron stars with intense magnetic fields?

a. pulsars

b. white dwarfs

c. black holes

d. flare stars

e. accretion disks

If i remember correctly it would be a Pulsar because it tends to rotate extremely quickly while emitting beams of electromagnetic radiation from two sides causing us to only be able to detect them in a pulse like pattern hence the name Pulsar