how to determine binominal or geometric by looking at graph?

16.9 The figure shows the probability distribution of a discrete random variable X. Note that the cursor is on the histogram bar representing a value of 6 . Which of the following best describes this random variable? (a) Binomial with n=8,p=0.1 (b) Binomial with n=8,p=0.3 (c) Binomial with n=8,p=0.8 (d) Geometric with p=0.1 (e) Geometric with p=0.2