Which best describes the difference between a seismograph and seismogram?



A.A seismograph records tectonic activity, while a seismogram records volcanic activity.



B.A seismograph is a written record of volcanic eruptions, while a seismogram is a written record of earthquakes.



C.A seismograph is the instrument that detects and records movements within the earth, while a seismogram is the recording.



D.A seismograph is the instrument that detects and records volcanic activity, while a seismogram is the written record of that activity.