Consider the following statements:

1). In forced vibrations, the body vibrates under the influence of an applied force 2). In damped vibrations, amplitude reduces over every cycle of vibration 3). In torsional vibrations, the disc moves parallel to the axis of shaft 4). In transvers vibrations, the particles of the shaft moves approximately perpendicular to the axis of the shaft Which of these statements are correct?

(a) 1,2 , and 3

(b) 1,3 , and 4

(c) 2,3 , and 4

(d) 1,2 , and 4 .