In a Binomial Distribution with 10 Trials, Which of the Following

In a binomial distribution with 10 trials, which of the following is true?

A)
B) $P(x<4) =P(x \geq 5) -P(x \geq 4)$
C) $P(x<6) =1-P(x \geq 7)$
D) $P(x>7) =P(x \geq 8)$