About error correction, which of the following is true for speaking class

A．The teacher should pay more attention to students’ language error and correct it at any time during the class.
B．During fluency-based activities, it is much preferable to correct the mistakes in time since it can guarantee language accuracy.
C．During accuracy-based work, the teacher need to intervene more, which means to correct students’ language errors in time.
D．The teacher should ignore students’ language errors to protect students’ self-esteem and confidence during the class.