In a certain code, the symbol for 0 (zero) is * and that for 1 is `Delta`. There are no other symbols for all other numbers greater than one. The numbers greater than 1 are to be written only by using the two symbols givnen above. The value of the symbol for 1 doubles itself every time it shifts one place to the left. Study the following examples :
'0' is written as *
'1' is written as `Delta`
'2' is written as `Delta "*"`
'3' is written as `Delta Delta`
'4' is written as `Delta` ** and so on.
How does one write 14 + 2 - 7 in this code ?

Options

A. `Delta "*" "*" Delta`
B. `Delta "*" Delta Delta`
C. `Delta Delta Delta Delta`
D. `Delta "*" Delta`

Explanation

`14 + 2 - 7 = 9`. We write 9 as 1001. (Use method of successive divisions by 2)