Why is there a choice of The Creed?
In the Creed the people of God respond to the word by giving their assent to the faith proclaimed in the readings and in the homily. The Creed is said on Sundays, solemnities (except the weekdays of the the Easter octave) and in solemn local celebrations. It is normally used only when mentioned in the Church calendar.
The Roman Missal emphasizes the use of the Nicene Creed, suggesting that the Apostles’ Creed is especially appropriate during Lent and Easter.
The Apostles’ Creed is acclamatory in style and is easily committed to memory for more spontaneous use. The Nicene Creed is common to many Christian Churches and traditions; it has a particular ecumenical value. Every congregation should be familiar with both forms of the profession of faith (Note 9f; Ordo, CCCB Liturgical Calendar 2013-2014).