Consider the following statements in connection with the phase diagrams:
(1) Phase diagrams of binary alloys change by the presence of other alloying elements.
(2) Tie-line construction and lever rule are used to determine the phase compositions.
(3) Time-temperature transformations can be studied with the help of phase diagrams.
Which of the above statements are correct?
(a) 1 and 2 only (b) 1 and 3 only
(c) 2 and 3 only (d) 1, 2 and 3