1. Read the filowng queohan belaw and anoose the statemant that is always true. Bis a B². SB1=0 Is a sailave matrix IS a A) B SB B) B isn't mvertible C) if Bis invertilble, then theve is sove non-2ero column Xi such that Bx=SX of B?-5B is a sc alov muituple of another ow D) a ww IS E) none above

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