:1.  The histogram of dividend earnings in 1986 for a sample of
180 persons is given in figure ?.  There are no persons in the
sample having dividend earnings in excess of $1,500.  The block
over the interval from $400 to $800 is missing.  The height of
this missing block is closest to <p>

a.  20 <p>

b.  10 <p>

c.  15 <p>

d.  60 <p>

e.  5 <p>