A Vertical Spring System with a Bob Having Mass M

Multiple Choice

A vertical spring system with a bob having mass M is set into motion with amplitude A. When the bob is pulled instead to move with amplitude 2A, the following can be concluded:

A) The period is half as large as before
B) The period is unaffected
C) The period is twice as large as before
D) The period is about 0.7 times as large as before
E) The period is about 1.4 times as large as before