A stepper motor has step angle of \(1.8^{\circ}\) and the pulse frequency is 300 pulses per second. Now consider the following statements.
1. The resolution of motor is 200 steps/revolution.
2. The speed of motor is \(90 \mathrm{rpm}\).
3. The number of steps, the motor moves in 15 revolutions is 3000 steps.

Of these
(a) only 1 and 2 are correct
(b) only 2 and 3 are correct
(c) only 3 is correct
(d) 1, 2 and 3 all are correct.