Which of the following statements best describes the preamble to the Indian constitution?

A.It is an integral part of the constitution and is enforceable in a court of law.
B.It is not an integral part of the constitution but acts as a torchbearer for the interpretation of the constitution.
C.It is an integral part of the constitution, and it confers and prohibits powers of the legislature.
D.Itt is an integral part of the constitution, but it is neither a source of power to the legislature nor a prohibition upon the powers of the legislature.