Consider the following statements
1. The actual entry point through which the molten metal enters the mould cavity is called ingrate
2. Bottom gate is case of a mould creates unfavorable temperature gradient
3. Sprue is case of a mould is made tapered to avoid air inclusion
Which of these statements is/are correct?
(a) 1 only (b) 1 and 2
(c) 2 and 3 (d)1 and 3