A one-foot stick is marked in 1/4 and 1/5 portion. How many total markings will there be, including the end points?	Choose the most appropriate option.
A) 18 B) 16 C) 13 D) 9 E) 11
LCM of 20 = 20   1/4 marking are (Table of 5) 0...... 5 ......10..... 15......20   (Total = 5)   1/5 marking are (Table of 4) 0 ....... 4 ...... 8...... 12........ 16......20 (Total = 6)   Overlapping markings are 0 ........ 20 (Total = 2)   Total markings = 5+6-2= 
<gadget id="calculator">5+6-2</gadget>
<output>9</output>
9   Answer= 9
<result>D</result>
A one-foot stick is marked in 1/4 and 1/5 portion. How many total markings will there be, including the end points?