Eutectoid steel is i quenched instantaneously to 500 degree

Eutectoid steel is (i) quenched instantaneously to 500 degree C, (ii) held for 5 seconds, and (iii) quenched instantaneously to room temperature. What is the final microstructure? 75% fine pearlite (alpha + Fe_3C) + 25% martensite 75% fine pearlite (alpha + Fe_3C) + 25% y 75% fine pearlite (alpha + Fe_3C) + 25% bainite (a + Fe_3C) 25% fine pearlite (alpha + Fe_3C) + 75% martensite

Solution

here the final structure will be 75% fine pearlite and 25% tempered martensite . hence the correct option is (a)